Chemistry Unit 4: Atomic Structure Review

The smallest particle of an element that can exist

• proton

• nucleus

• atom

• electron

• neutron

A positively charged subatomic particle

• proton

• nucleus

• atom

• electron

• neutron

A negatively charged subatomic particle

• proton

• nucleus

• atom

• electron

• neutron

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A subatomic particle with no charge

• proton

• nucleus

• atom

• electron

• neutron

The central part of an atom that contains the proton and neutrons

• proton

• nucleus

• atom

• electron

• neutron

A pure substance made of only one kind of atom

• element

• compound

• atom

• periodic table

The atomic number of an element is the total number of which particles in the nucleus?

• neutrons

• protons

• protons plus neutrons

• protons plus electrons

The mass number of an element is the total number of which particles in the nucleus?

• neutrons

• protons

• protons plus neutrons

• protons plus electrons

What does the number 84 in the name krypton-84 represent?

• the atomic number

• the mass number

• the sum of protons and electrons

• the number of protons

All atoms are:

• positively charged, with more protons than electrons

• negatively charged, with more electrons than protons

• neutral, with the number of protons equaling the number of electrons

• neutral, with the number of protons equaling the number of neutrons

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