Atoms and sub-atomic particles

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ATOM

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BASIC UNIT OF MATTER

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NUCLEUS

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THE CENTER OF AN ATOM, CONTAINS THE PROTONS AND NEUTRONS. THIS IS THE MASS OF THE ATOM

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PROTON

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A SUBATOMIC PARTICLE THAT HAS A POSITIVE CHARGE AND IS FOUND IN THE NUCLEUS OF AN ATOM WITH A MASS OF 1 AMU

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NEUTRON

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A SUBATOMIC PARTICLE THAT HAS NO CHARGE AND THAT IS FOUND IN THE NUCLEUS OF AN ATOM WITH A MAS OF 1 AMU.

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ELECTRON

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A SUBATOMIC PARTICLE THAT HAS A NEGATIVE CHARGE AND IS FOUND IN THE ELECTRON CLOUD WITH A MASS OF 0 AMU

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AMU

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ABBREVIATION FOR ATOMIC MASS UNIT

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ATOMIC NUMBER

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TELLS YOU THE NUMBER OF PROTONS IN THE NUCLEUS OF AN ATOM

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ATOMIC MASS

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TELLS YOU THE NUMBER OF PROTONS AND NEUTRONS IN THE NUCLEUS