Pure Substances Vs. Mixtures

[check all that apply] Pure substances include:

• Elements

• Homogeneous Mixtures

• Compounds

• Heterogeneous Mixtures

An element is?

• Chemically combined

• Pure substances that can be broken down

• Pure substances that cannot be broken down into simpler substances

• One or more elements chemically combined.

[check all that apply] An compound is?

• Chemically combined

• Pure substances that can be broken down

• Pure substances that cannot be broken down into simpler substances

• One or more elements chemically combined.

The properties of a compound are different from the elements that make them up.

• True

• False

Tags

NGSS.MS-PS1-2

Oxygen is a

• Element

• Compound

Tags

NGSS.MS-PS1-1

Water (H₂O) is a

• Element

• Compound

Tags

NGSS.MS-PS1-1

[check all that apply] Mixtures are

• chemically combined

• composed of two or more types of matter that can be present in varying amounts

• One or more elements chemically combined

• can be separated by physical changes

Salt (NaCl) is

• Mixture

• Compound

Tags

NGSS.MS-PS1-1

Saltwater is

• Mixture

• Compound

Heterogeneous mixture is

• A mixture with a composition that varies from point to point

• A mixture with a uniform composition and appears visually the same throughout