ACT Science Vocabulary

Front

Molecule

Back

Smallest unit of a chemical compound.

Tags

NGSS.MS-PS1-1

Front

Neutron

Back

Fundamental atom particle that has no charge.

Front

-sect

Back

Cut.

Front

a-

Back

Without.

Front

macro-

Back

Large.

Front

Atom

Back

Basic unit of a chemical element.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

Electron

Back

Fundamental atom particle that has a negative charge.

Front

Proton

Back

Fundamental atom particle that has a positive charge.

Front

Compound

Back

Substance formed when two or more elements are chemically bonded.

Tags

NGSS.MS-PS1-1

Front

Element

Back

Pure substance that cannot be broken down into simpler substances.