Unit 2 chapter 3 Test REVIEW

Front

What causes molecules to attach to each other?

Back

Attraction is the force that causes molecules to stick together.

Front

True or False: When matter is changing states from a liquid to a gas, some of the matter is destroyed.

Back

False. Matter is not destroyed; it changes state.

Front

Are water molecules attracted to the atoms that make up salt in ocean water?

Back

Yes, water molecules are attracted to salt atoms.

Front

What is a visual indicator that a liquid has dissolved in another liquid?

Back

The mixture becomes homogeneous and is the same throughout.

Front

What happens when sugar is mixed with water?

Back

The sugar dissolves and the mixture becomes a solution.

Front

Define 'solution' in terms of mixtures.

Back

A solution is a homogeneous mixture where one substance is dissolved in another.

Front

What is the process called when a solid turns into a liquid?

Back

Melting is the process of a solid turning into a liquid.

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into gas.

Front

What is the difference between a solute and a solvent?

Back

A solute is the substance that is dissolved, while a solvent is the substance that does the dissolving.

Front

What does it mean for a mixture to be homogeneous?

Back

A homogeneous mixture has a uniform composition throughout.