Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves making or breaking bonds between atoms. Examples include burning, rusting, and baking.

Front

Which of the following is NOT a physical change?

Back

Baking cupcakes.

Front

Is melting ice a physical or chemical change?

Back

Physical change.

Front

What happens to the substance during a physical change?

Back

The substance may change its form or appearance, but its chemical identity remains the same.

Front

What happens to the substance during a chemical change?

Back

The substance transforms into one or more new substances with different properties.

Front

Can a physical change be reversed?

Back

Yes, many physical changes can be reversed, such as freezing and melting.

Front

Can a chemical change be reversed?

Back

Most chemical changes cannot be easily reversed.

Front

Is freezing juice a physical or chemical change?

Back

Physical change.

Front

What is an example of a chemical change?

Back

Burning wood.