Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded together.

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.

Front

What is a chemical change?

Back

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

Front

Can you give an example of a physical change?

Back

Melting ice is an example of a physical change.

Front

Can you give an example of a chemical change?

Back

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

Front

What happens to the temperature when a powder is added to a liquid in a chemical change?

Back

The temperature decreases.

Front

What is an indicator of a chemical change?

Back

A change in color can indicate a chemical change.

Front

What happens to a banana when it turns brown?

Back

It undergoes a chemical change as it rots.

Front

What is the result of mixing two substances that change color?

Back

It indicates a chemical change has occurred.

Front

What happens to a glowstick when it is cracked?

Back

It undergoes a chemical change and emits light.