Physical and Chemical Changes

Front

What is the definition of a physical change?

Back

A physical change is a change in which the form or appearance of matter changes, but its chemical composition remains the same.

Front

What is the definition of a chemical change?

Back

A chemical change is a change that results in the formation of one or more new substances with different properties.

Front

True or False: Melting is a physical change.

Back

True

Front

What happens to thermal energy during melting?

Back

Thermal energy is added during melting.

Front

What is an example of a physical change?

Back

An example of a physical change is ice melting into water.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

True or False: Boiling is a physical change.

Back

True

Front

What happens to thermal energy during boiling?

Back

Thermal energy is added during boiling.

Front

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

Back

The process is called condensation.

Front

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

Back

The process is called freezing.