Atomic Number and Atomic Mass

Front

What particle has no charge?

Back

Neutron

Front

What is the atomic number?

Back

The number of protons in an atom.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atom.

Front

How do you calculate the mass number?

Back

Add the number of protons and neutrons.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the charge of a neutron?

Back

No charge.

Front

If an atom has 7 protons, what is its atomic number?

Back

7.

Front

If an atom has 14 protons and 7 neutrons, what is its mass number?

Back

21.

Front

What is the relationship between atomic number and the number of electrons in a neutral atom?

Back

They are equal.