Physical and Chemical Changes Test Review!

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.

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

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change because it transforms the wood into ash and smoke.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change because it changes from solid to liquid but remains water.

Front

What happens to the properties of a substance during a chemical change?

Back

The properties of the original substance change, and new properties of the new substance are formed.

Front

What is an observation in science?

Back

An observation is a statement based on what you see, hear, or measure, and it can be tested.

Front

What is an example of an observation?

Back

Saying 'The butterfly has four wings' is an observation.

Front

What is the role of plants and animals in an ecosystem when they die?

Back

When plants and animals die, their bodies undergo a chemical change and are recycled back into the ecosystem.

Front

What is an example of a change in color indicating a chemical change?

Back

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

Front

What is the difference between a change in size and a chemical change?

Back

A change in size is a physical change, while a chemical change results in the formation of new substances.