Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change in the state or appearance of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances.

Front

True or False: Boiling water is a physical change.

Back

True

Front

What happens to the molecules of a substance during a physical change?

Back

The molecules may change their arrangement or state, but their chemical structure remains the same.

Front

What is an example of a chemical change?

Back

Rust forming on iron is an example of a chemical change.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

What state of matter has a definite shape and volume?

Back

Solid.

Front

What state of matter has a definite volume but takes the shape of its container?

Back

Liquid.

Front

What state of matter has no definite shape or volume?

Back

Gas.

Front

True or False: Adding heat can change the state of matter.

Back

True.