Chemistry 2nd vocab test

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attract

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17 Terms
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attract

to pull towards

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repel

to push away

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cathode ray tube

the device used in the discovery of the electron

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electrodes

the point at which an electric current enters or leaves something, for example, a battery

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cathode ray

a beam of electrons emitted by the cathode of an electrical discharge tube

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neutral

when a particle has no charge.

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subatomic particles

the tiny particles that atoms are made of

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elements

the simplest form of matter. cannot be broken down into other substances

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compound

a substance that contains 2 or more elements joined together. can be broken down into elements.

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atoms

tiny particles that make up elements

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nucleus

the central part of an atom

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proton

particle with positive charge

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mixture

a substance consisting of two or more substances mixed together

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electrons

particles that flies around a nucleus. they have a negative charge

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charge

the physical property of matter which causes it to experience a force when placed in an electromagnetic field

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atomic theory

a theory of the structure of the atom

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neutron

a particle with no charge

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