Atomic Structure TRT

Front

What is the mass number of an atom?

Back

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

Front

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

Back

Subtract the atomic number from the mass number.

Front

Which subatomic particle is neutral?

Back

Neutrons are the subatomic particles that have no charge.

Front

What is the atomic number of an atom?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

If an atom has an atomic number of 15, how many protons does it have?

Back

It has 15 protons.

Front

What is the relationship between mass number and atomic number?

Back

The mass number is the sum of protons and neutrons, while the atomic number is the number of protons.

Front

What are the three main subatomic particles?

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 nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.