Chemical vs Physical Changes

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 process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Is digesting food a physical or chemical change?

Back

Chemical change.

Front

When you break a cracker into pieces, what type of change is it?

Back

Physical change.

Front

What happens to silverware when it tarnishes?

Back

It undergoes a chemical change.

Front

Which of the following is an example of a physical change: Burning wood, rusting bicycle, cutting a tree with a chainsaw, or cooking an egg?

Back

Cutting a tree with a chainsaw.

Front

What is an example of a chemical change?

Back

Rusting of iron.

Front

What is NOT an example of a physical change?

Back

Rust.

Front

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

Back

A chemical change results in new substances, while a physical change does not.

Front

Can a physical change be reversed?

Back

Yes, many physical changes can be reversed, such as freezing and melting.