Front

What are the tiny units that make up matter called?

Back

particles

Front

New substances are formed during ___ reactions.

Back

chemical

Front

Materials are made of?

Back

Substances

Front

__ takes place when you place water in a freezer.

Back

Solidification

Front

The __ explains the properties of matter and what happens during changes of state.

Back

particle model

Front

melting is a __ changes.

Back

physical