Physical and Chemical Changes

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties.

Front

What is a physical change?

Back

A physical change is a process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Give an example of a chemical change.

Back

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

Front

Give an example of a physical change.

Back

Melting ice into water is an example of a physical change.

Front

What happens to wood when it burns?

Back

When wood burns, a chemical change takes place, producing ash, smoke, and gases.

Front

What is rotting food an example of?

Back

Rotting food is an example of a chemical change.

Front

Is melting chocolate a chemical or physical change?

Back

Melting chocolate is a physical change.

Front

What happens during a chemical change?

Back

During a chemical change, the original substances are transformed into new substances.

Front

What is an indicator of a chemical change?

Back

Indicators of a chemical change include color change, gas production, and temperature change.

Front

Can a physical change be reversed?

Back

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