ACT Science Vocabulary

Front

Neutron

Back

Fundamental atom particle that has no charge.

Front

super- / sur-

Back

Above, upon.

Front

Element

Back

A substance composed of atoms with the same atomic number which cannot be split into smaller substances.

Front

-meter

Back

Measure.

Tags

NGSS.MS-PS3-4

Front

-logy

Back

Study of something.

Tags

NGSS.MS-LS4-2

Front

Atom

Back

The smallest unit of a chemical element, consisting of a nucleus surrounded by electrons.

Tags

NGSS.MS-PS1-1

Front

Molecule

Back

A group of two or more atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

Compound

Back

A substance formed when two or more different elements are chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

Chemical Reaction

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

Mass

Back

The amount of matter in an object, typically measured in grams or kilograms.

Tags

NGSS.MS-PS1-5