G3. SCIENCE. Chemical change

These are two signs that a chemical change

has taken place.

• carbon dioxide

• light and heat

• green plants

• properties

Plants change this material into food

and oxygen.

• carbon dioxide

• bubbles

• green plants

• rust

These are the characteristics of a certain

type of matter.

• chemical change

• properties

• green plants

• light and heat

During this activity, cake batter is changed

chemically.

• changing

• freezing

• melting

• baking

When iron is chemically changed, this

is made.

• carbon dioxide

• bubbles

• green plants

• rust

These show that carbon dioxide gas forms

when baking soda is added to vinegar.

• carbon dioxide

• bubbles

• green plants

• rust

These use the Sun’s energy to make

chemical changes

• carbon dioxide

• bubbles

• green plants

• properties

When something changes chemically, it becomes a

............................ of material.

• new type

• new color

• new sign

• new light

When something changes chemically, it has different .......................... from the original material.

• properties

• colors

• signs

• light

The process of a chemical change can be detected by certain ..........................., or evidence.

• properties

• colors

• signs

• light