Physical and Chemical Changes in Matter

Front

A physical change is a change in a substance that does not alter its __________

Back

matter

Front

The reverse of evaporation, when gas becomes a liquid, is called ____________

Back

condensation

Front

An exothermic reaction __________ or loses energy, usually in the form of heat or energy

Back

releases

Front

A ____________ has a definite volume but no definite shape

Back

liquid

Front

____________ is the phase change from liquid to solid

Back

freezing

Front

A chemical change results in the formation of __________ substances

Back

new

Front

The process of a solid turning directly into a gas is called __________

Back

sublimation

Front

The __________ of a substance is a characteristic that can be observed without changing its identity

Back

physical property

Front

In a __________ change, the chemical composition of the substance changes

Back

chemical

Front

The process of a liquid turning into a gas is known as __________

Back

evaporation