Atomic Structure

Front

How is the number of neutrons in the nucleus of an atom calculated?

Back

Subtract the number of protons (p+) from the mass number.

Front

How many neutrons does calcium have?

Back

Calcium has 20 neutrons.

Front

Where are the electrons found in the structure of an atom?

Back

Electrons are found in spaces around the nucleus.

Front

If an atom has 12 positively charged subatomic particles, how many electrons must it have to be neutral?

Back

It must have 12 electrons.

Front

What is the atomic number of an atom with 9 protons?

Back

The atomic number is 9.

Front

What are the three main subatomic particles in an atom?

Back

Protons, neutrons, and electrons.

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in the nucleus.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus and contribute to the mass of the atom.