Unit 2 Review: Properties of Matter/Phase Changes

Front

What happens to particles when they are heated?

Back

They speed up and spread out.

Front

What is the state of matter that has a definite shape and a definite volume?

Back

Solid.

Front

What type of mixture is salt water?

Back

A homogeneous mixture.

Front

At what point does a substance finish melting?

Back

At its melting point, which is a specific temperature (e.g., C for ice).

Front

What is Chex Mix an example of?

Back

A mixture.

Front

What is the definition of matter?

Back

Anything that has mass and takes up space.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What is the difference between a homogeneous mixture and a heterogeneous mixture?

Back

A homogeneous mixture has a uniform composition, while a heterogeneous mixture has a non-uniform composition.