Physical or Chemical Changes

Front

What defines a chemical change?

Back

A new material is formed.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

Is melting ice cream a physical or chemical change?

Back

Physical change.

Front

Is grass growing in a lawn a physical or chemical change?

Back

Chemical change.

Front

Is mowing the lawn a physical or chemical change?

Back

Physical change.

Front

Is melting butter for popcorn a chemical or physical change?

Back

Physical change.

Front

What is an example of a chemical change?

Back

Rust forming on iron.

Front

What is an example of a physical change?

Back

Ice melting into water.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

What happens to the molecules during a physical change?

Back

The molecules remain the same but may change state or appearance.