Quiz 3: Atoms

Which is an electron?

• A

• B

• C

Which is a neutron?

• A

• B

• C

Which is a proton?

• A

• B

• C

The atomic nucleus contains...

• protons only

• protons and neutrons

• neutrons only

• protons and electrons

__________ surround the nucleus.

• electrons

• neutrons

• protons

• protons and neutrons

Protons have a _______ charge and a mass of _________.

• positive, 1 amu

• negative, 1 amu

• neutral, 1 amu

• negative, 0 amu

Electrons have a _______ charge and a mass of _________.

• positive, 1 amu

• negative, 1 amu

• neutral, 1 amu

• negative, 0 amu

Neutrons have a _______ charge and a mass of _________.

• positive, 1 amu

• negative, 1 amu

• neutral, 1 amu

• negative, 0 amu

The majority of the mass of an atom is found in the

• nucleus

• electron cloud

The majority of the volume of an atom is found in the

• nucleus

• electron cloud