Atoms

Front

What are the three main types of subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.

Front

Which subatomic particle has the least mass?

Back

Electron.

Front

How do the number of protons and electrons compare in a neutral atom?

Back

They are equal.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the role of neutrons in an atom?

Back

They help stabilize the nucleus.

Front

What determines the chemical properties of an element?

Back

The number and arrangement of electrons.