Big Idea 8 and 9

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, such as burning or rusting.

Front

What is an example of a chemical change?

Back

Burning is an example of a chemical change.

Front

What can speed up the dissolving rate of a solid in a liquid?

Back

Crushing the solid into smaller pieces can speed up the dissolving rate.

Front

What happens when water vapor cools and turns into liquid water?

Back

This process is called condensation.

Front

What is the process called when ice turns into water?

Back

The process is called melting.

Front

Which tool is NOT used to measure volume?

Back

A balance scale cannot be used to measure volume.

Front

What happens to water when heat is added to ice?

Back

The ice melts into water.

Front

What is evaporation?

Back

Evaporation is the process where liquid water turns into water vapor.

Front

What is condensation?

Back

Condensation is the process where water vapor cools and changes back into liquid water.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not create new substances, while chemical changes do.