Atomic Theory and Atomic Structure

Front

What makes up most of the volume of an atom?

Back

Empty space.

Front

What is impossible to know about an electron at any given time?

Back

Its exact location.

Front

What do all atoms of a particular element have in common?

Back

The same number of protons.

Front

What are subatomic particles with a positive charge called?

Back

Protons.

Front

Who believed that atoms of the same element are identical to each other?

Back

Dalton.

Front

What is the center of an atom called?

Back

Nucleus.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What charge do neutrons have?

Back

No charge (neutral).

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.