Chemical and Physical Changes

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, melting point, or density.

Front

What is a chemical property?

Back

A characteristic of a substance that describes its ability to change into different substances, such as flammability or reactivity.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition, such as melting or freezing.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as rusting or burning.

Front

Give an example of a physical change.

Back

An ice cube melting.

Front

Give an example of a chemical change.

Back

Milk souring.

Front

What happens to the state of matter during a physical change?

Back

The state of matter can change (solid, liquid, gas) without changing the substance itself.

Front

What is the melting point?

Back

The temperature at which a solid becomes a liquid.

Front

What is the boiling point?

Back

The temperature at which a liquid becomes a gas.

Front

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

Back

A physical change does not alter the substance's chemical identity, while a chemical change results in new substances being formed.