Classifying Matter

Air is an example of a

• homogeneous mixture

• heterogenous mixture

• pure substance

• compound

Gold is classified as a pure substance. Which of its properties supports this classification?

• Gold is a solid at room temperature.

• Gold is resistant to rust and tarnish.

• Gold has a high melting point.

• Gold is made of one kind of atom.

Which drawing is of a single compound.

• A
• B
• C
• D

Tags

NGSS.MS-PS1-1

Type of mixture that has the SAME COMPOSITION in every part.

• Homogenous

• Heterogeneous

Which of the following are pure substances?

A. Oxygen

B. Air

C. NaCl

D. Water

• Oxygen

• Air

• NaCl

• Water

Sodium is a soft, silvery metal that reacts violently with water. Chlorine is a poisonous, greenish yellow gas. When you combine these two elements, you form a soluble white solid that is soluble in water and safe to eat. This illustrates that...

• a compound has different properties from the elements that form it.

• . a compound has the same properties as the elements that form it

• a mixture has different properties from the elements that form it

• a mixture has the same properties as the elements that form it.

A combination of particles of one or more substance that are distributed uniformly throughout another substance is a/an

• pure sustance

• homogeneous mixture

• heterogeneous mixture

• compound

1. The parts of a mixtures....

• cannot be separated

• can be physically separated

• have a new properties after they are mixed

• form a chemical combination of two or more atoms