CLassifying Matter + Phase Changes

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Oxygen (O) and Carbon (C).

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together. Examples include Water (H2O) and Carbon Dioxide (CO2).

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. Examples include air and salad.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition throughout. Examples include saltwater and vinegar.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that does not have a uniform composition and the different components can be seen. Examples include salad and sand.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of protons, neutrons, and electrons.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together. Examples include O2 (oxygen gas) and H2O (water).

Front

What is the phase change from solid to liquid called?

Back

Melting.

Front

What is the phase change from liquid to gas called?

Back

Evaporation.

Front

What is the phase change from gas to liquid called?

Back

Condensation.