Atomics Regents

Chemistry Regents review 1

By NAUDIA LAWRENCE

Special Show-Out goes to all students who scored Over 20 Points!!

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• 2 electrons in the first shell

• Up to 8 electrons in the other shells​

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Atoms have

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of protons = # of electrons

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When a bean was fired at the gold foil some went through while some bounced off of something

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Atomic Discoery

Protons are positive

Nuetrons are neutral

Electrons are negative

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Protons and neutrons are found in the NUCLEUS​

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Charges on subatomic particles

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Proton = 1 amu

Neutron = 1amu

electron = 1 amu​

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Mass of subatomic particles

A beta particle is an electron

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Electrons have no mass​

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Mass of subatomic particles

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Elements in the same GROUP have similar properties

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​Atoms are usual represented with a mass number, symbol and atomic number

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All parts are labeled to help you find everything

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Periodic Table