Matter

Front

Atom

Back

The smallest unit of matter that retains the properties of an element.

Front

Matter

Back

Anything that has mass and takes up space.

Front

Molecule

Back

Two or more atoms bonded together.

Front

Element

Back

A pure substance made of only one type of atom.

Front

Compound

Back

A substance made of two or more different elements chemically combined.

Front

Mixture

Back

Two or more substances physically combined, not chemically bonded.

Front

Model

Back

A representation that helps visualize something too small or complex to see directly.

Front

Periodic Table

Back

An organized chart of all known elements, arranged by atomic number.

Front

Group/Family

Back

A vertical column in the Periodic Table; elements share similar properties.

Front

Period

Back

A horizontal row in the Periodic Table; properties change gradually across.