First Semester Chemistry Review

Front

Atoms

Back

The basic unit of a chemical element.

Front

Molecules

Back

Two or more atoms bonded together.

Front

Protons

Back

Positively charged subatomic particles found in the nucleus of an atom.

Front

Neutrons

Back

Subatomic particles with no charge, found in the nucleus of an atom.

Front

Electrons

Back

Negatively charged subatomic particles orbiting the nucleus of an atom.

Front

Atomic Mass Unit

Back

A unit of mass used to express atomic and molecular weights.

Front

Endothermic

Back

A process or reaction that absorbs energy in the form of heat.

Front

Exothermic

Back

A process or reaction that releases energy in the form of heat.

Front

Heating Curve

Back

A graph that shows the change in temperature of a substance as heat is added.

Front

Cooling Curve

Back

A graph that shows the change in temperature of a substance as it loses heat.