2-1 Part 3 Review

Front

What does the nucleus of an atom contain?

Back

Protons and neutrons.

Front

Why is a nucleus considered UNSTABLE?

Back

Because there are uneven numbers of neutrons and protons.

Front

What makes a nucleus STABLE?

Back

There are equal numbers of neutrons and protons.

Front

When is a nucleus STABLE?

Back

When the number of protons and neutrons are the same.

Front

What is the ratio of protons to neutrons in a STABLE nucleus?

Back

1:1 (the same amount of protons and neutrons).

Front

What particles are found in the nucleus of an atom?

Back

Protons and neutrons.

Front

What is the charge of protons?

Back

Positive charge.

Front

What is the charge of neutrons?

Back

No charge (neutral).

Front

What happens if there are more protons than neutrons in a nucleus?

Back

The nucleus may become unstable.

Front

What is the significance of the neutron-to-proton ratio?

Back

It determines the stability of the nucleus.