Atoms Quick Check

Front

What is an atom?

Back

An atom is the smallest unit of matter.

Front

What are the positively charged particles of an atom called?

Back

Protons.

Front

What is the center of an atom called?

Back

Nucleus.

Front

Which subatomic particles are located in the nucleus of an atom?

Back

Protons and neutrons.

Front

What charge does a proton have?

Back

Positive charge.

Front

What charge does a neutron have?

Back

No charge (neutral).

Front

What charge does an electron have?

Back

Negative charge.

Front

What is the role of electrons in an atom?

Back

Electrons are involved in chemical bonding and reactions.

Front

How do protons and electrons compare in size?

Back

Protons and neutrons are much larger than electrons.

Front

What determines the atomic number of an element?

Back

The number of protons in the nucleus.