Physical or Chemical Changes

Front

What defines a chemical change?

Back

A chemical change is defined by the formation of a new material.

Front

What is a physical change?

Back

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

Front

Is burning wood a chemical or physical change?

Back

Burning wood is a chemical change.

Front

What happens to the molecules during a chemical change?

Back

During a chemical change, the molecules rearrange to form new substances.

Front

Is dissolving sugar in water a chemical or physical change?

Back

Dissolving sugar in water is a physical change.

Front

What is an example of a chemical change?

Back

An example of a chemical change is rust forming on iron.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice.

Front

How can you tell if a chemical change has occurred?

Back

Signs of a chemical change include color change, gas production, and temperature change.

Front

Is cooking an egg a chemical or physical change?

Back

Cooking an egg is a chemical change.

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.