Unit 2 Vocabulary Review

Matter can exist in three states: solid, liquid, and gas.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

An atom is the smallest unit of matter that retains the properties of an element.

• True

• False

Tags

NGSS.MS-PS1-1

Subatomic particles include protons, neutrons, and electrons.

• True

• False

Tags

NGSS.MS-PS1-1

Protons have a negative charge and are found in the nucleus of an atom.

• True

• False

Neutrons have no charge and are found outside the nucleus of an atom.

• True

• False

Electrons are positively charged and orbit the nucleus of an atom.

• True

• False

An element is a substance that cannot be broken down into simpler substances by chemical means.

• True

• False

A molecule is the smallest unit of a compound.

• True

• False

Tags

NGSS.MS-PS1-1

Pure substances have a fixed composition and cannot be separated by physical means.

• True

• False

A compound is made up of three or more different elements chemically combined.

• True

• False