Chemical and Physical 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. Examples include rusting, burning, and baking.

Front

What happens during condensation?

Back

Condensation is the process where matter changes from a gas to a liquid, often seen when water vapor cools and forms droplets.

Front

What happens to the weight of matter during a chemical change?

Back

The weight of matter stays the same during a chemical change, as mass is conserved.

Front

Can a physical change be undone?

Back

Yes, a physical change can often be undone, such as freezing and melting water.

Front

Can a chemical change be undone?

Back

No, a chemical change usually cannot be undone, as it creates new substances.

Front

What is an example of a physical change?

Back

An example of a physical change is cutting a piece of paper or mixing fruit in a bowl.

Front

What is an example of a chemical change?

Back

An example of a chemical change is baking a cake, where ingredients react to form a new product.

Front

What is evaporation?

Back

Evaporation is the process where a liquid changes into a gas, often due to heat.

Front

What is freezing?

Back

Freezing is the process where a liquid turns into a solid when cooled.