Chapter 9 - Understanding Atoms

Front

The nucleus of an atom consists of ______.

Back

protons and neutrons

Front

Rutherford's contribution to atomic models was the discovery of the _______.

Back

nucleus

Front

Most of an atom is empty space. True or False?

Back

True

Front

The progression of the atomic theory is as follows: Democritus, Aristotle, ________, Thomson, _________, _______, Modern Model.

Back

Dalton, Rutherford, Bohr

Front

Atoms that are unstable are more likely to be _______ than atoms that are stable.

Back

radioactive

Front

What is the smallest unit of an element that retains the properties of that element?

Back

Atom

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, Electrons

Front

What charge do protons carry?

Back

Positive charge

Front

What charge do electrons carry?

Back

Negative charge

Front

What is the charge of neutrons?

Back

No charge (neutral)