Atomic Structure

Front

What is atomic number?

Back

Number of protons in an atom.

Front

How many neutrons does a sodium atom have?

Back

12

Front

Which particles change the charge in atoms when ions are formed?

Back

Electrons.

Front

Which subatomic particles are found in the nucleus of an atom?

Back

Protons and Neutrons.

Front

Who discovered the electron within the atom?

Back

Thomson.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an ion?

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

What are isotopes?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.