Atomic Structure Quiz

What particles are found inside the nucleus?

• Electrons and protons

• Neutrons and electrons

• Protons and neutrons

• Only electrons

What is the atomic number of an element?

• The number of neutrons

• The number of electrons

• The number of protons

• The sum of protons and neutrons

What happens to an atom when it loses one or more electrons?

• It becomes a positive ion

• It becomes a negative ion

• Its atomic number decreases

• Its mass number decreases

Which type of radiation does not contain particles but contains a lot of energy?

• Alpha rays

• Beta rays

• Gamma rays

• Neutron rays

During beta decay, what happens to the atomic number of an atom?

• It stays the same

• It decreases by 2

• It decreases by 1

• It increases by 1

What is an ion?

• An atom that has lost or gained protons

• An atom that has lost or gained neutrons

• An atom that has lost or gained electrons

• An atom that is in the excited state

If an ion contains 10 electrons, 12 protons, and 13 neutrons, what is the ion's charge?

• 2-

• 1-

• 2+

• 3+

An element's atomic number is equal to the number of __________ in its nucleus.

• protons

• neutrons

• electrons

In a neutral atom, the number of protons is equal to the number of __________.

• protons

• neutrons

• electrons

The mass number of an atom is the sum of the number of __________ and __________.

• protons

• neutrons

• electrons