Physical and Chemical Properties and 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. Examples include burning, rusting, and rotting.

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 breaking.

Front

Is burning wood a chemical or physical change?

Back

Burning wood is a chemical change.

Front

What happens to ice when it turns into water and then steam?

Back

This is an example of a physical change.

Front

What is an example of a physical change?

Back

Glass breaking into tiny shards is an example of a physical change.

Front

What is an example of a chemical change?

Back

Baking a cake is an example of a chemical change.

Front

What happens when fruit rots?

Back

Rotting fruit produces a bad smell because it is experiencing a chemical change.

Front

What is the difference between a chemical change and a physical change?

Back

A chemical change results in the formation of new substances, while a physical change does not change the chemical composition of the substance.

Front

Can a physical change be reversed?

Back

Many physical changes can be reversed, such as freezing and melting, but chemical changes usually cannot be reversed.

Front

What is an example of a reversible physical change?

Back

An example of a reversible physical change is water freezing into ice and then melting back into water.