Apologia Physical Science

The smallest chemical unit of matter.

• Atom

• Molecule

• Concentration

Tags

NGSS.MS-PS1-1

Two or more atoms linked together to make a substance with unique properties.

• Atom

• Molecule

• Concentration

Tags

NGSS.MS-PS1-1

Sulfur - a yellow powder composed of sulfure atoms.

Sulfur dioxide - a colorless, poisonous gas that contains sulfur atoms

Sulfur dioxide is composed of ________.

• atoms

• molecules

Tags

NGSS.MS-PS1-1

The metric measurement "kilograms" represents ____________.

• mass

• volume

• length

water is heated and turns to steam

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

density

• physical property

• chemical property

All matter takes up space and

• dissolves in water

• has mass

• has a definite shape

• is visible

Tags

NGSS.MS-PS1-5

What state of matter has a definite volume but not a definite shape?

• Solid

• Liquid

• Gas

• Plasma

What is the ratio of a substance's mass to its volume?

• dissection

• deep

• diffusion

• density

All pure substances

• contain only one type of atom.

• can be broken down into simpler substances.

• have a variable composition.

• have a fixed composition.