Unit 2 Review

Front

What is the weighted average of the masses of all naturally occurring isotopes of an element?

Back

Atomic Mass

Front

What is all matter made of?

Back

Atoms

Front

What are ions?

Back

Atoms with an electric charge.

Front

If two atoms have the same atomic number but different numbers of neutrons, what are they called?

Back

Isotopes of the same atom.

Front

Elements in the same ________ are more chemically similar.

Back

Group.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.