Chemical Changes

Front

What is a chemical change?

Back

A process that results in the formation of new chemical substances.

Front

What are some indicators of a chemical change?

Back

Fizzing, foaming, burning, and temperature change.

Front

Can chemical changes be reversed?

Back

Most chemical changes cannot be reversed.

Front

What is a physical change?

Back

A change that does not result in the formation of new substances, such as changing shape or size.

Front

Give an example of a physical change.

Back

Making a paper airplane.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

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

Back

A physical change alters the form or appearance of a substance without changing its composition, while a chemical change results in new substances being formed.

Front

What is an example of a chemical change?

Back

Burning wood, which produces ash and smoke.

Front

What is meant by 'temperature change' in the context of chemical changes?

Back

A change in temperature can indicate that a chemical reaction is occurring, often releasing or absorbing heat.

Front

What is the significance of fizzing in a chemical reaction?

Back

Fizzing often indicates the production of gas, which is a sign of a chemical change.