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Splitting atoms in the kitchen?

Video vocabulary

detector

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US / dɪˈtektə(r) /

UK / dɪˈtɛktɚ /

A2
  • noun
  • Device that receives a signal and responds to it

sort

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US / sɔ:t /

UK / sɔrt /

A1
  • noun
  • Group or class of similar things or people
  • verb
  • To organize things by putting them into groups
  • To deal with things in an organized way

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

should

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US / ʃʊd /

UK / ʃʊd /

A1
  • other
  • Used to indicate what is proper or reasonable

here

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US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

scan

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US / skæn /

UK / skæn /

B1
  • noun
  • A look inside the body with a special machine
  • verb
  • To look inside of the body with a special machine
  • To look at something very quickly for information
  • To look at all parts to find something
  • To make a digital copy of an image or a paper

supply

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US / sə'plaɪ /

UK / səˈplaɪ /

A2
  • noun
  • Availability of products and services for use
  • Specific things needed to perform a certain task
  • verb
  • To give or sell goods to others for their use

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

try

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US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

area

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US / 'eərɪə /

UK / ˈɛriə /

A1
  • noun
  • Amount of measured space
  • A specific section or space; part of a region
  • A subject or field of study

normal

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US / 'nɔ:ml /

UK / ˈnɔrməl /

A1
  • adjecitve
  • Standard or regular way of doing something
  • Having standard mental or physical ability, health

always

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US / 'ɔ:lweɪz /

UK / ˈɔlwez,-wɪz,-wiz /

A1
  • adverb
  • For a very long time
  • At all times; in every situation
  • For ever

will

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US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

breakthrough

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US / 'breɪkθru: /

UK / ˈbrekˌθru /

B2
  • noun
  • Important discovery in doing something difficult

quantity

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US / ˈkwɒntəti /

UK / ˈkwɑntɪti /

A2
  • noun
  • A large amount of something
  • Amount or number of something

actually

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US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

ensure

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US / ɪn'ʃʊə(r) /

UK / ɛnˈʃʊr /

A2
  • verb
  • To make something sure, certain, or safe

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

certain

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US / ˈsə:tn /

UK / ˈsɚtn /

A1
  • adjecitve
  • Definite, fixed
  • Referring to an unspecified amount or quantity
  • Being sure about something; without doubt

day

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US / deɪ /

UK / de /

A1
  • noun
  • A period of 24 hours beginning at midnight
  • The period of time when it is light outside
  • Person's name

item

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US / ˈaɪtəm /

UK / ˈaɪtəm /

A2
  • noun
  • Single, brief piece of news or reporting
  • Distinct, individual thing, often part of a group

point

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US / pɔɪnt /

UK / pɔɪnt /

A1
  • noun
  • An item to be discussed
  • Small spot or dot
  • Fact or detail
  • Feature of something
  • The size of the text on a page or screen
  • A certain time or stage in a process
  • Certain position in time or space
  • Idea or fact you try to convince people about
  • Measurement of scores in a game, sport
  • Sharp end of something, e.g. a pen or pin
  • verb
  • To face a certain direction, e.g. north
  • To indicate something with your finger to others

sure

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US / ʃʊə(r) /

UK / ʃʊr /

A1
  • adjecitve
  • Having no doubts about something
  • Have confidence in your own words or actions
  • Firmly established or held; being firm or stable
  • Being correct or true
  • adverb
  • What you say to agree willingly

although

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US / ɔ:lˈðəu /

UK / ɔlˈðo /

A1
  • conjunction
  • Despite the fact that; however

core

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US / kɔ:(r) /

UK / kɔr, kor /

A2
  • noun
  • Important central part of something
  • verb
  • To take out the central section of a fruit

bullion

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US / ˈbʊliən /

UK / ˈbʊljən /

C2
  • noun
  • Mass of precious metal

expose

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US / ɪk'spəʊz /

UK / ɪkˈspoʊz /

A2
  • noun
  • News article revealing secret information
  • verb
  • To make visible, without covering or protection
  • To allow light through a cameras lens onto film
  • To be talked about in the media
  • To make a secret known to the public
  • To experience something, often a harmful thing

may

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US / meɪ /

UK / me /

A1
  • noun
  • 5th month of the year
  • other
  • Used to express a desire
  • Expresses permission, possibility or probability
  • Used to show that a thing could be true

sceptical

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US / ˈskeptɪkl /

UK / ˈskɛptɪkəl /

C2
  • adjecitve
  • Doubting that something is true/probable/useful

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

homework

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US / ˈhəumwə:k /

UK / ˈhomˌwɚk /

B2
  • noun
  • Work that a student is given to do at home

little

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US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

material

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US / məˈtɪəriəl /

UK / məˈtɪriəl /

A2
  • adjecitve
  • Relevant; (of evidence) important or significant
  • Belonging to the world of physical things
  • noun
  • Cloth; fabric
  • Supplies or data needed to do a certain thing
  • Substance from which a thing is made of

mention

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US / 'menʃn /

UK / ˈmɛnʃən /

A2
  • noun
  • Act of referring to or talking about something
  • verb
  • To refer to or talk or write about something

nevertheless

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US / ˌnevəðəˈles /

UK / ˌnevərðəˈles /

A2
  • adverb
  • In spite of what has just been said; nonetheless

the

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US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

usable

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US / ˈju:zəbl /

UK / ˈjuzəbəl /

B1
  • adjecitve
  • Able to be used; good enough to use

apparently

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US / əˈpærəntli /

UK / əˈpærəntlɪ /

A2
  • adverb
  • According to what you heard; from what can be seen

cooker

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US / 'kʊkə(r) /

UK / ˈkʊkɚ /

A1
  • noun
  • Piece of kitchen equipment with oven burners etc.

chemical

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US / ˈkemɪkl /

UK / ˈkɛmɪkəl /

A2
  • adjecitve
  • Made of various elements
  • noun
  • Basic substance produced by mixing elements

level

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US / 'levl /

UK / ˈlɛvəl /

A2
  • adjecitve
  • (Sports) equal to another
  • Being steady and determined (e.g. a voice)
  • noun
  • Specific height of something
  • Amount of ability you have compared to others
  • Floor or deck within a building
  • Tool used to determine if something is lying flat
  • verb
  • To aim a gun at someone
  • To destroy a building; flatten an area completely
  • To make things flat or even
  • To make a score equal to another, in sports

neutron

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US / ˈnu:ˌtrɔn, ˈnju:- /

UK / ˈnuˌtrɑn, ˈnju- /

A1
  • noun
  • Charge and mass about equal to a proton; enters into the structure of the atomic nucleus

make

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US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

ones

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US / wʌnz /

UK / wʌnz /

A1
  • number
  • Number 1, a single person or thing

run

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US / rʌn /

UK / rʌn /

A1
  • noun
  • Journey between two places made by ship or car
  • Series of similar things or successes and failures
  • Act of running; exercise of running
  • verb
  • To depart or travel according to a schedule
  • To cause an animal to move in a certain direction
  • (Of an engine) to be operating
  • To start or use a computer program
  • To flow in a certain direction, like a liquid
  • To manage or operate a business
  • To operate or drive something
  • (Of a road) to go from one place to another
  • To move your legs faster than walking

safely

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US / ˈseɪfli /

UK / ˈseflɪ /

A1
  • adverb
  • Out of danger

into

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US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

one

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US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

than

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US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

construct

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US / kənˈstrʌkt /

UK / kənˈstrʌkt /

A2
  • noun
  • A thought, theory or hypothesis
  • verb
  • To build or create something
  • To create a sentence, story, argument or theory

also

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US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

fine

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US / faɪn /

UK / faɪn /

A2
  • adjecitve
  • Good, acceptable or satisfactory
  • Of high quality; made with great skill
  • In a careful or exact manner; into small pieces
  • Being of high quality
  • Good; okay; no problem
  • (Of weather) good; not raining
  • noun
  • Money you have to pay because you broke a rule
  • verb
  • To pay money because you broke a law

kind

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US / kaɪnd /

UK / kaɪnd /

A1
  • adjecitve
  • In a caring and helpful manner
  • friendly and considerate
  • noun
  • One type of thing

how

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US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

you

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US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

wastewater

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US / 'weɪstwɔ:tə(r) /

UK / 'weɪstwɔ:tər /

A1
  • noun

blow

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US / bləʊ /

UK / blo /

A2
  • noun
  • Something that causes you difficulty or sadness
  • Act of making air come out of your mouth
  • A hit or strike from an object
  • verb
  • To move something using air
  • To make air come quickly out of your mouth
  • To clear something by forcing air through it

gather

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US / ˈgæðə(r) /

UK / ˈɡæðɚ /

A2
  • noun
  • Fold in cloth, as in a full skirt
  • verb
  • To bring objects together into one place
  • (Of liquids) To come to a head, as in boil
  • To collect foods such as wild berries or crops
  • To increase or accumulate
  • To bring people, animals together into a group
  • To activate strength, courage to prepare for task
  • To understand or believe some information

kitchen

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US / ˈkɪtʃɪn /

UK / ˈkɪtʃən /

A2
  • noun
  • Place where food is cooked

mind

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US / maɪnd /

UK / maɪnd /

A1
  • noun
  • One's opinion or way of thinking about something
  • Part of humans that allows us to think or feel
  • verb
  • To be bothered or upset by something
  • To take care of someone e.g. as a bodyguard

scientist

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US / ˈsaɪəntɪst /

UK / ˈsaɪəntɪst /

A2
  • noun
  • Person who is trained in a science

cover

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US / 'kʌvə(r) /

UK / ˈkʌvɚ /

A1
  • noun
  • A different version of another song
  • Bed sheets; blankets
  • (Police or military) protection from attack
  • Amount of money to be paid in an insurance claim
  • Thing you put over something to close or hide it
  • Front and back part of a book or magazine
  • Shelter built to protect from the natural elements
  • verb
  • To record a different version of another song
  • To include as part of its area
  • To put something over something to hide it
  • To discuss a subject in a talk or meeting
  • To form a layer over something so it is hidden
  • To have sufficient funds to pay for something
  • To include something within an agreed limit
  • To report news on TV, radio or in a newspaper
  • (Police or military) to protect from attack
  • To travel a certain distance in a given time
  • To wrap something with something, such as a cloth

have

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US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

part

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US / pɑ:t /

UK / pɑ:rt /

A1
  • adjecitve
  • To some degree; half; not fully
  • noun
  • Division of a book
  • Ratio of something, e.g. 3 of gin, 1 of tonic
  • A line in a person's hair, made with a comb
  • Character an actor plays on stage, movie, or TV
  • Some, but not all of a specific thing
  • Role in causing something to happen
  • verb
  • To make a line in a person's hair, by using a comb
  • To move two things apart creating a space
  • To leave someone, or to break off a relationship

break

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US / breɪk /

UK / brek /

A1
  • noun
  • Time you stop an activity before continuing
  • End of a relationship
  • An escape from a place such as a jail
  • (Lucky) advantage or benefit from something
  • Find a solution or answer to a problem or crime
  • Change in the weather
  • verb
  • To create a new record e.g. running the 100m dash
  • To form a crack in something
  • To burst or become damaged
  • To end a relationship
  • To escape from a place such as a jail
  • To train a wild animal e.g. a horse
  • To separate into pieces by force, or by dropping
  • To act against a law, rule, or promise
  • To become known suddenly, as in the news
  • To not do what you promised e.g. not keep promises
  • To solve a crime, or answer a problem
  • To stop functioning properly
  • To suddenly start, open or commence
  • To change in pitch suddenly, as in a voice
  • To fall on the shore, as in waves
  • To begin or change suddenly; the dawn or weather
  • To defeat by causing the person to lose their will

fantastic

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US / fænˈtæstɪk /

UK / fænˈtæstɪk /

A2
  • adjecitve
  • Strange or unusual in design or appearance
  • Very large, fast or great
  • Hard to believe; amazing

hear

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US / hɪə(r) /

UK / hɪr /

A1
  • verb
  • To be aware of sound; to perceive with the ear
  • To be told or find out information or facts
  • To consider or listen to a court case

pure

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US / pjʊə(r) /

UK / pjʊr /

A2
  • adjecitve
  • Not mixed with anything else
  • Being morally good

accord

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US / ə'kɔ:d /

UK / əˈkɔ:rd /

B1
  • noun
  • Agreement or harmony
  • An agreement or treaty between countries
  • verb
  • To be in harmony or agreement; consent
  • To give (someone) the respect due to them

curiosity

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US / ˌkjʊərɪ'ɒsətɪ /

UK / ˌkjʊriˈɑsɪti /

B1
  • noun
  • Something unusual and perhaps worthy of collecting
  • Eager desire to learn more about something

smoke

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US / sməʊk /

UK / smoʊk /

B1
  • noun
  • Grey gas from fires and cigarettes
  • Fog of air coming from e.g. a cigarette, fire
  • verb
  • To give off a cloud of grey gas from burning
  • To add a taste to food by putting it near a fire
  • To breathe in through a cigarette, etc.

end

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US / end /

UK / ɛnd /

A1
  • noun
  • The point where a process or activity stops
  • A point that marks the limit of something; finish
  • Goal or desired result
  • The tip, edge or limit of something
  • verb
  • To be the last part of something

manage

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US / ˈmænɪdʒ /

UK / ˈmænɪdʒ /

A1
  • verb
  • To survive hardships and difficulties; to cope
  • To run or operate a business by directing others

could

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US / kəd /

UK / kʊd /

A1
  • other
  • Past form of 'can' to mean have ability
  • Used to ask for something politely, or to offer

handle

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US / 'hændl /

UK / ˈhændl /

A2
  • noun
  • The part of a door you hold to open it
  • Thing you hold to carry or open a bag, pan etc.
  • verb
  • To cope with or take responsibility for
  • To control a machine, car etc.
  • To control or be controlled /used in a certain way
  • To deal with a particular situation/person; manage
  • To buy, sell, or move materials or goods
  • To hold, control, or use something with the hands
  • To touch objects with the hands to look at them

know

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US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

often

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US / ˈɔfən /

UK / ˈɔfən,ˈɑfən,ˈɔftən,ˈɑf- /

A1
  • adverb
  • Many times; frequently; on many occasions

public

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US / 'pʌblɪk /

UK / ˈpʌblɪk /

A1
  • adjecitve
  • Owned by the government
  • Concerning society in general
  • Being available or accessible to people in general
  • Known or able to be known by all people

away

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US / ə'weɪ /

UK / əˈwe /

A1
  • adjecitve
  • Not present
  • adverb
  • Disappear completely
  • Doing something with a lot of energy
  • Not here; far from here; in a different direction
  • To a different area, location

defeat

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US / dɪ'fi:t /

UK / dɪˈfit /

B1
  • noun
  • When you lose a fight, game or competition
  • verb
  • To beat an enemy, team, disease

dangerous

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US / ˈdeɪndʒərəs /

UK / ˈdendʒərəs /

A1
  • adjecitve
  • Involving the chance of hurt or damage; risky

his

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US / hɪz /

UK / hɪz /

A1
  • pronoun
  • Something belonging to a male person

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

with

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US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

not

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US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

maybe

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US / ˈmeɪbi /

UK / ˈmebi /

A1
  • adverb
  • Possibly but not certainly; perhaps

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

quite

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US / kwaɪt /

UK / kwaɪt /

A1
  • adverb
  • Not very; fairly
  • Very; In a complete or total manner

reasonable

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US / ˈri:znəbl /

UK / ˈrizənəbəl /

A2
  • adjecitve
  • Being somewhat good, but not great
  • Fair and sensible; appropriate

whole

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US / həul /

UK / hol /

A1
  • adjecitve
  • Complete or full; all of
  • Being in a good condition
  • noun
  • Complete amount or sum; total

scale

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US / skeɪl /

UK / skel /

A2
  • noun
  • Size, level, or amount when compared
  • Small hard plates that cover the body of fish
  • Device that is used to weigh a person or thing
  • Range of numbers from the lowest to the highest
  • Dimensions or size of something
  • verb
  • To change the size of but keep the proportions
  • To climb something large (e.g. a mountain)
  • To remove the scales of a fish

surprising

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US / səˈpraɪzɪŋ /

UK / sərˈpraɪzɪŋ /

A1
  • adjecitve
  • Making you feel a bit shocked because unexpected
  • verb
  • To do something that another person didn't expect

fission

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US / ˈfɪʃn /

UK / ˈfɪʃən /

C1
  • noun
  • Form of nuclear energy where particles combine

safety

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US / ˈseɪfti /

UK / ˈsefti /

A1
  • noun
  • Device on a gun to prevent accidental shooting
  • State of being free from harm or danger

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

but

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US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

good

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US / ɡʊd /

UK / ɡʊd /

A1
  • adjecitve
  • Proper, appropriate or right
  • (Of an amount) enough; plenty
  • Excellent; high quality
  • Acting well or properly; of moral character
  • In a positive or happy emotional state
  • noun
  • Advantage or benefit

research

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US / rɪ'sɜ:tʃ /

UK / rɪˈsɚtʃ, ˈriˌsɚtʃ /

A2
  • noun
  • Study done to discover new ideas and facts
  • Work done to find or discover knowledge
  • verb
  • To study in order to discover new ideas and facts

admire

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US / əd'maɪə(r) /

UK / ædˈmaɪr /

A2
  • verb
  • To feel respect or wonder toward someone

can

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US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

landscape

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US / 'lændskeɪp /

UK / ˈlændˌskep /

B1
  • noun
  • Area or scene of activity, especially in politics
  • Picture of natural scenery in a place
  • View of a (beautiful) country area or scene
  • verb
  • To make gardens that improve an area of land

interested

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US / ˈɪntrəstɪd /

UK / ˈɪntrɪstɪd, -tərɪstɪd, -təˌrɛstɪd /

A1
  • adjecitve
  • Having had your attention taken; curious
  • verb
  • To make someone want to know about something
  • To persuade to do, become involved with something

really

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US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

pick

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US / pɪk /

UK / pɪk /

A1
  • noun
  • Sharp tool used for breaking the ground
  • Item selected from a group of choices
  • verb
  • To take fruit or vegetables from a plant or tree
  • To decide on a thing from various choices; select
  • To remove (flower, etc.) with your fingers

would

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US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

from

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US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

out

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US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

whichever

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US / wɪtʃˈevə(r) /

UK / hwɪtʃˈɛvɚ, wɪtʃ- /

B1
  • pronoun
  • Whatever one

aim

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US / eɪm /

UK / em /

A2
  • noun
  • Act of pointing something at a target
  • Purpose or goal
  • verb
  • To point something at a target
  • To intend to get a thing or for a thing to happen

any

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US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

come

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US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

isotope

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US / ˈaɪsətəʊp /

UK / ˈaɪsətoʊp /

A1
  • noun
  • Chemical element nearly identical, but with differing weights

particular

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US / pəˈtɪkjələ(r) /

UK / pɚˈtɪkjəlɚ, pəˈtɪk- /

B2
  • adjecitve
  • One specific (one)
  • Having firm ideas about what is desirable
  • Being special or more than is typical

think

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US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

far

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US / fɑ:(r) /

UK / fɑr /

A1
  • adjecitve
  • A long way away
  • Being a long way away
  • adverb
  • To a large degree or extent

handel

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US / ˈhændəl /

UK / /

A1
  • other
  • Music of Handel

picture

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US / 'pɪktʃə(r) /

UK / ˈpɪktʃɚ /

A1
  • noun
  • General situation or state of being
  • Mental image of what something is or looks like
  • Movie; film
  • Painting, drawing or photograph on paper or screen
  • verb
  • To understand or imagine something
  • To imagine someone or something in an image

where

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US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

detect

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US / dɪˈtekt /

UK / dɪˈtɛkt /

A2
  • verb
  • To discover or identify the presence of something

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

industry

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US / 'ɪndəstrɪ /

UK / ˈɪndəstri /

A1
  • noun
  • Hard work; being busy working
  • Factories or businesses that make certain products

large

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US / lɑ:dʒ /

UK / lɑ:rdʒ /

A1
  • adjecitve
  • Big; of great size; broad, tall, wide, or fat

most

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US / məʊst /

UK / most /

A1
  • adverb
  • Very; extremely
  • Greatest possible degree
  • pronoun
  • Nearly all of something

thorium

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US / ˈθɔ:riəm /

UK / ˈθɔriəm, ˈθor- /

A1
  • noun
  • Soft silvery-white tetravalent radioactive metallic element; isotope is used as a power source in nu

something

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US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

and

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US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

guy

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US / ɡaɪ /

UK / ɡaɪ /

A1
  • noun
  • Man; boy; any person

atom

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US / 'ætəm /

UK / ˈætəm /

B1
  • noun
  • Smallest bit that matter can be broken down into

background

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US / ˈbækgraʊnd /

UK / ˈbækˌɡraʊnd /

A2
  • noun
  • Images, color, or information behind the main one
  • Someone's personal work and educational history
  • A position not as important as the main event
  • Past events that influence things in the present

laboratory

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US / lə'bɒrətrɪ /

UK / ˈlæbrəˌtɔri, -ˌtori /

B1
  • noun
  • A place to do scientific experiments

otherwise

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US / ˈʌðəwaiz /

UK / ˈʌðɚˌwaɪz /

A2
  • adverb
  • In an additional or different way
  • Unless; or

they

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US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

very

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US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

radium

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US / ˈreɪdiəm /

UK / ˈrediəm /

C2
  • noun
  • Radioactive element occurring in uranium ore

work

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US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

chance

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US / tʃɑ:ns /

UK / tʃæns /

A1
  • adjecitve
  • Happening by luck; not planned
  • Taking a risk to try something
  • noun
  • The way something happens without planning
  • An opportunity; favorable circumstances, situation
  • The possibility that something will happen
  • verb
  • To occur just through luck; happen
  • To take a risk to try something

all

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US / ɔ:l /

UK / ɔl /

A1
  • adverb
  • Completely; totally
  • determiner
  • Being every one of something
  • pronoun
  • 100% of something; the complete amount

who

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US / hu: /

UK / hu /

A1
  • pronoun
  • Which person
  • Used to introduce information about people

top

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US / tɒp /

UK / tɑp /

A1
  • adjecitve
  • Being good or great; excellent
  • Being the most in degree or quality
  • noun
  • Item of clothing covering shoulders to waist, hips
  • A cover or lid
  • Part (e.g. road) that is the furthest away
  • Highest or upper part or point of something
  • Best or highest status or position
  • Flat upper surface or edge of an object
  • Child's toy that spins on its point
  • Upper section or leaves of fruits and vegetables
  • Winning in a sport or contest
  • verb
  • To be higher or larger than a specific value
  • To arrive at the highest point of something
  • To put a cover or layer or over something
  • To kill; murder
  • To hold the highest position on a list
  • To be more important, successful or better than
  • To beat someone or win at a game

clearly

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US / ˈklɪəlɪ /

UK / ˈklɪrlɪ /

A1
  • adverb
  • In a way that is easy to understand; obviously

kilogram

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US / ˈkɪləgræm /

UK / ˈkɪləɡræm /

A2
  • noun
  • 1000g

sweden

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US / 'swi:dn /

UK / 'swi:dn /

A1
  • proper noun
  • A country that occupies the eastern part of the Scandinavian peninsula; population 9,800,000 (estima

take

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US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

reactor

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US / riˈæktə(r) /

UK / riˈæktɚ /

B1
  • noun
  • Device to control nuclear energy as a power source

result

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US / rɪ'zʌlt /

UK / rɪˈzʌlt /

A2
  • noun
  • Something produced through tests or experiments
  • Final score of a competition, election or game
  • verb
  • To be the outcome of other causes and effects

bit

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US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

blog

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US / blɒɡ /

UK / blɑ:ɡ /

A2
  • noun
  • A shared on-line public journal
  • verb
  • To read, write, or edit a shared on-line journal

general

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US / 'dʒenrəl /

UK / ˈdʒɛnərəl /

A1
  • adjecitve
  • Widespread, normal or usual
  • noun
  • Top ranked officer in the army

look

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US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

nature

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US / 'neɪtʃə(r) /

UK / ˈnetʃɚ /

A1
  • noun
  • Person's character or particular way of behaving
  • Basic look, feel or function of something
  • Physical world, including plants, animals, rocks

nice

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US / naɪs /

UK / naɪs /

A1
  • adjecitve
  • Being attractive or of high quality or value
  • Good or enjoyable
  • Being kind or friendly

americium

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US / ˌæməˈrɪsiəm /

UK / ˌæməˈrɪʃiəm /

A1
  • noun
  • Radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms

bash

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US / bæʃ /

UK / bæʃ /

B2
  • verb
  • To hit something; to criticize

oven

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US / ˈʌvn /

UK / ˈʌvən /

B1
  • noun
  • Kitchen appliance you put food in to bake, roast

mixture

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US / ˈmɪkstʃə(r) /

UK / ˈmɪkstʃɚ /

B1
  • noun
  • Something made by combining two or more things

compound

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US / 'kɒmpaʊnd /

UK / kɑmˈpaUnd /

B1
  • adjecitve
  • (Of a term) created by combining two or more words
  • noun
  • Series of buildings that are walled or fenced off
  • Chemical made up of several others
  • Closed walled area, as in a prison
  • Something formed by combining elements/parts
  • Term created by using two or more words together
  • verb
  • To pay interest on a loan including the interest
  • To make something from various parts or components
  • To make a mistake or problem worse

for

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US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

why

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US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

worth

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US / wɜ:θ /

UK / wɚθ /

A2
  • other
  • the financial, practical or moral value of somebody/something
  • having a particular value, especially in money

everybody

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US / ˈevribɒdi /

UK / ˈɛvriˌbɑdi, -ˌbʌdi /

A1
  • pronoun
  • Every person; everyone

nuclear

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US / ˈnju:kliə(r) /

UK / ˈnukliɚ, ˈnju- /

A2
  • adjecitve
  • Concerning or involving the center of an atom

restrict

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US / rɪ'strɪkt /

UK / rɪˈstrɪkt /

A2
  • verb
  • To prevent a person from doing something

specifically

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US / spəˈsɪfɪkli /

UK / spəˈsɪfɪkli /

A2
  • adverb
  • As regards a particular thing; closely related to
  • In particular

set

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US / set /

UK / sɛt /

A1
  • adjecitve
  • Prepared for something; ready
  • noun
  • Complete group of something
  • Place where a television show or movie is filmed
  • Group of games in a tennis match
  • Device that receives radio or television signals
  • verb
  • To make a clock state or ring at a particular time
  • To decide upon or choose something
  • To make something ready for use (e.g. table)
  • To decide on a price for something
  • To become hard (of glue, concrete etc.)
  • To be located in a specific place or time
  • To put (e.g. a vase) down carefully in a place
  • To put someone in a certain condition or state
  • (Of the sun) to go lower than the horizon

stream

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US / stri:m /

UK / strim /

A2
  • noun
  • Classes split into ability levels
  • A small river
  • verb
  • To send a constant flow of data over the internet
  • To split classes or students into ability levels

start

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US / stɑ:t /

UK / stɑrt /

A1
  • noun
  • First time or place that a thing exists; beginning
  • First opportunity to achieve something, e.g. a job
  • Sudden action or movement because you are scared
  • other
  • Beginning of something in place or time
  • verb
  • To do, be or happen for the first time; begin
  • To turn something on

yourself

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US / jɔ:ˈself /

UK / jʊrˈsɛlf, jɔr-, jor-, jə- /

A1
  • pronoun
  • Reflexive form of 'you', used for an emphasis

well

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US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

amazing

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US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

begin

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US / bɪ'ɡɪn /

UK / ˈbeɡɪn /

A1
  • verb
  • To do the first part of an action; to start

imply

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US / ɪmˈplaɪ /

UK / ɪmˈplaɪ /

A2
  • verb
  • To suggest something, without saying it directly

danger

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US / ˈdeɪndʒə(r) /

UK / ˈdendʒɚ /

A1
  • noun
  • The possibility of getting hurt, damaged, killed

kill

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US / kɪl /

UK / kɪl /

A1
  • noun
  • Animal killed by a person or other animal
  • verb
  • To cause someone to experience a lot of pain
  • To end the life of a person or other living thing
  • To be very funny
  • To prevent something from continuing or operating
  • To do something unimportant to pass time quickly

sound

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US / saʊnd /

UK / saʊnd /

A1
  • adjecitve
  • Sensible, dependable and reliable
  • Unbroken or undisturbed, as of sleep
  • Firm or solid in structure
  • Sane; not mentally ill
  • Clearly reasoned; involving sense, good judgment
  • noun
  • Unique quality that characterizes a style of music
  • Waves traveling in air or water that can be heard
  • verb
  • To seem or appear to be, from what was said
  • To say in a clear deliberate manner
  • To make a noise, e.g. to ring a bell

water

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US / 'wɔ:tə(r) /

UK / ˈwɔtɚ, ˈwɑtɚ /

A1
  • noun
  • Clear liquid that forms the seas, rivers and rain
  • Large area such as an ocean or sea
  • verb
  • (Of the eyes) to produce tears
  • (Mouth) to become wet at the thought of nice food
  • To pour liquids onto a plant to keep it alive

news

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US / nju:z /

UK / nu:z /

A1
  • noun
  • Broadcast on radio or TV about recent events
  • Information about recent events

training

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US / ˈtreɪnɪŋ /

UK / ˈtrenɪŋ /

A1
  • noun
  • Act of educating someone to get better at
  • verb
  • To teach a pet a behavior or a trick
  • To educate someone in something, e.g. medicine
  • To cause a plant to grow a certain way by cutting
  • To point a certain way or toward something
  • To practice to get better at a thing, e.g. sports

wonder

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US / 'wʌndə(r) /

UK / ˈwʌndɚ /

A1
  • noun
  • Surprise caused by experiencing something amazing
  • verb
  • To feel curious about something
  • To think or consider about something over time

injure

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US / ˈɪndʒə(r) /

UK / ˈɪndʒɚ /

A2
  • verb
  • To do (usually physical) harm or damage to

split

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US / splɪt /

UK / splɪt /

A2
  • adjecitve
  • No longer married or in a relationship
  • (Injured) by cutting it open, as in someone's lip
  • (Of a decision) when people cannot decide a winner
  • noun
  • Difference of opinion in a group causing a break
  • Separation or a break in something
  • verb
  • To become divided or broken along a straight line
  • To cause a cut in (lip, etc.)
  • To have difference of opinion in a group
  • To separate into two or more pieces
  • To divide something in an even or fair way

home

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US / həʊm /

UK / hom /

A1
  • adjecitve
  • A sports team's own field or place of play
  • adverb
  • Into the correct or intended position
  • noun
  • House, apartment or building to be rented or sold
  • Institution for sick or elderly people
  • Place where a person or a family lives
  • Country where a person lives or was born
  • Region that is native to peoples, plant or animals
  • verb
  • To move towards a particular target location

just

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US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

talk

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US / tɔ:k /

UK / tɔk /

A1
  • noun
  • Style of speaking
  • Discussion between two countries
  • Giving information in front of people; lecture
  • Saying things or ideas to someone with words
  • verb
  • To make a formal speech about something
  • To say things or ideas to someone with words

atomic

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US / əˈtɒmɪk /

UK / əˈtɑ:mɪk /

B1
  • adjecitve
  • Concerning atoms

benefit

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US / 'benɪfɪt /

UK / ˈbɛnəfɪt /

A2
  • noun
  • Good result or effect, something advantageous
  • verb
  • To have a good effect or be helpful

objective

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US / əbˈdʒektɪv /

UK / əbˈdʒɛktɪv /

A2
  • adjecitve
  • Being real, rather than simply being an idea
  • noun
  • Something you decide you want to do; goal

efficiently

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US / ɪ'fɪʃntlɪ /

UK / ɪˈfɪʃəntlɪ /

A2
  • adverb
  • In a way that does not create waste

much

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US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

about

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US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

even

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US / 'i:vn /

UK / ˈivən /

A1
  • adjecitve
  • Being equal in influence, power, possibility etc.
  • Being divided equally or fairly
  • (Of teams/contest) with similar chances of success
  • Smooth, level, or regular
  • Can be divided by 2; ending in 2, 4, 6, 8, or 0
  • At a regular, equally steady manner
  • Remaining steady and unchanging
  • adverb
  • (When this is surprising) as well; too
  • (Used to compare two things/stress the difference)
  • verb
  • To make something level; to flatten
  • To make something equal

different

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US / ˈdɪfrənt /

UK / ˈdɪfrənt /

A1
  • adjecitve
  • Not of the same kind; unlike other things

like

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US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

that

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US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

storey

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US / 'stɔ:rɪ /

UK / ˈstɔri, ˈstori /

B1
  • noun
  • One of many floors or levels in a building

what

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US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

week

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US / wi:k /

UK / wik /

A1
  • noun
  • Period of seven days from Sunday to Saturday

down

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US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

scroll

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US / skrəʊl /

UK / skroʊl /

B2
  • noun
  • A long rolled piece of paper with writing on it
  • Something shaped like a rolled piece of paper
  • other
  • To move up, down, or across a computer screen
  • verb
  • To move up and down a computer screen

then

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US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

uranium

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US / juˈreɪniəm /

UK / jʊˈreniəm /

A1
  • noun
  • Radioactive element used for nuclear energy/weapon

suppose

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US / sə'pəʊz /

UK / səˈpoʊz /

A2
  • conjunction
  • What if
  • verb
  • To imagine or guess what might happen

element

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US / 'elɪmənt /

UK / ˈɛləmənt /

A2
  • noun
  • Essential or particular part of something

get

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US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

radioactivity

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US / ˌreɪdɪəʊæk'tɪvətɪ /

UK / ˌredioækˈtɪvɪti /

B2
  • noun
  • Emission of electromagnetic rays in nuclear decay

bomb

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US / bɒm /

UK / bɑm /

B1
  • noun
  • An explosive device
  • verb
  • To attack with explosives
  • To fail or be completely unsuccessful

city

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US / 'sɪtɪ /

UK / ˈsɪti /

A1
  • noun
  • Area with many buildings, roads and people

happen

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US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

recommend

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US / ˌrekə'mend /

UK / ˌrɛkəˈmɛnd /

A2
  • verb
  • To advise or suggest that someone do something

yeah

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US / jeə /

UK / ˈjɛə, ˈjæə, jɛ- /

A1
  • exclamation
  • Another way of saying 'yes'

house

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US / haʊs /

UK / haʊs /

A1
  • noun
  • Place where a specific activity or business occurs
  • Building in which a family, person lives
  • verb
  • To give someone a place to live
  • To contain or store something

sink

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US / sɪŋk /

UK / sɪŋk /

A2
  • noun
  • Large bowl in a kitchen or washroom for washing
  • verb
  • To push something down into the ground
  • To dig (a well)
  • To move down toward a lower point
  • To decrease in value or amount

absolutely

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US / ˈæbsəlu:tli /

UK / ˈæbsəˌlutli, ˌæbsəˈlutli /

A2
  • adverb
  • Completely; totally; very

find

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US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

great

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US / ɡreɪt /

UK / ɡret /

A1
  • adjecitve
  • Very large in size
  • Very important
  • Very good; fantastic; wonderful
  • adverb
  • Very good; better than before
  • noun
  • Successful and well-admired person

mix

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US / mɪks /

UK / mɪks /

A2
  • noun
  • A combination of more than two things
  • verb
  • To combine two or more things to make one
  • To meet and get along with others, e.g. at a party

place

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US / pleɪs /

UK / ples /

A1
  • noun
  • Particular location, area or region
  • verb
  • To put someone in a particular type of situation
  • To put something in a certain location or position

own

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US / əʊn /

UK / on /

A1
  • adjecitve
  • Belong to oneself
  • determiner
  • Yours, his, hers, etc.; not belonging to another
  • pronoun
  • (Something) belong to myself
  • verb
  • To have something as your property
  • Subtitles section
  • Well, in the news this week, I've heard these stories of this guy, apparently called Richard Handel, who's been apparently trying to make a small nuclear reactor in his kitchen.
  • Yeah, I think it was in Sweden, in his kitchen, on his oven top, by the looks of it.
  • There's a picture here where things have gone a bit wrong and everything's blown up all over the place.
  • Well, I've only just found out about this, so I've just been looking it up now, but according to this blog here, he was mixing americium, radium and beryllium in 96% sulfuric acid, which doesn't sound like a very nice mixture,
  • I have to say.
  • I think what he was trying to do was use that mixture to mix them more efficiently, so that he had a mixture of these compounds that he could then use in this so-called nuclear reactor that he was trying to construct.
  • What I can gather is that what he was trying to do was to split atoms, which is nuclear fission.
  • So that's basically, you take the atomic core and you split it up into more than one part.
  • What do you think about that?
  • Well, there's a bit of me wondering why he was trying to do this, because actually this happens in nature all the time.
  • Radioactivity is a part of nature.
  • I'm not really sure why specifically he wanted to do it with these particular elements and what he was actually aiming to get.
  • What I do know is that it looks kind of dangerous from the results on top of his cooker.
  • The thing about danger is it really comes down to how much of a particular material or chemical or compound that you actually have.
  • Now, from what I've managed to pick up, he said that when he scanned the area with his detector, he couldn't actually pick up any radioactivity, which would imply that he actually had very small quantities.
  • Nevertheless, it's really not a good idea to have chemicals like this not in a laboratory setting, because they could have ended up going down the sink and getting into the water.
  • He's done quite a bit of homework, I have to say.
  • If we scroll down, he's got some items here about uranium.
  • He talks about the different isotopes and how only certain isotopes are usable for the nuclear industry for fission.
  • He mentions thorium.
  • He also mentions aluminium, bullion.
  • A little bit further down, we've got radium.
  • He talks about americium and how it's used in smoke detectors, which most households have.
  • So we've all got very small quantities of americium in our own houses.
  • I think what he was trying to do was use the americium to supply a stream of neutrons, and that these neutrons would bash up whichever atom he had in mind and break it up and cause the fission.
  • But I can't be sure which ones he was actually targeting.
  • Well, I think he's got in trouble, because you're not really supposed to have chemicals like this in a normal household setting.
  • It's one thing to handle them in a laboratory, but like I say, if you've got them in a house, they could get into wastewater streams going out.
  • The general public could be exposed to these.
  • And actually, although the actual quantities may not be large, it's not really the point.
  • You can't just have everybody using all of these chemicals, otherwise the whole landscape would end up covered with them.
  • So that's why he's in trouble, I think.
  • But why should science be restricted to scientists?
  • Maybe he was going to find some amazing breakthrough.
  • Isn't there a chance he'll make a great breakthrough?
  • There's always a chance, but you've got to do these things safely.
  • You know, you can't just run away with a great idea.
  • It's all fine and well if you get a fantastic result, but if you kill yourself in the process, well, I think you've defeated your own objectives, really.
  • As far as I know, if you split atoms, that's really dangerous.
  • Is there a chance that he would blow up a whole city or something like that?
  • I don't think so, because of the scale that I think he was working at.
  • Like I said, if he couldn't detect these compounds above background, he clearly can't have been working with very much.
  • And you actually need quite reasonable, often kilogram quantities of these sorts of elements to even begin to start constructing bombs.
  • And even then, you've really got to know what you're doing to make them work.
  • Well, I have to say, it's quite surprising to hear that compounds like this can be bought on eBay.
  • Although what I have to say is if they are out there on eBay, I'd be quite interested to know just how pure they really are.
  • You're sceptical, are you?
  • I'm a little bit sceptical, but I'm a scientist.
  • We're always sceptical.
  • Well, I have to say, I do admire his drive of curiosity, but it's absolutely not something that I would recommend that you do in your own home.
  • Why?
  • Just because I think the danger outweighs the benefit.
  • And at the end of the day, if you end up injuring yourself, it's just not worth it.
  • This is why we have all these levels of safety and training and science to ensure that we can do our research safely.