Atomic Structure

Front

What are subatomic particles with a positive charge called?

Back

Protons

Front

How do you calculate the number of neutrons in the nucleus of an atom?

Back

Subtract the number of protons from the mass number.

Front

What are subatomic particles that have no charge?

Back

Neutrons

Front

What does the atomic number represent in an atom?

Back

The number of protons in the nucleus.

Front

What are subatomic particles with a negative charge called?

Back

Electrons

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the role of neutrons in the nucleus?

Back

They help stabilize the nucleus by offsetting the repulsive forces between protons.

Front

What is an isotope?

Back

Atoms of the same element that have different numbers of neutrons.