Physical and Chemical Changes

Which of these are clues that a physical change has occurred? Choose all that apply.

• size of substance changes

• shape of substance changes

• a new substance is formed

• the state of matter changes

Which one of these are clues that a chemical change has occurred? Choose all that apply.

• bubbles are produced

• an odor is produced

• heat is given off

• a new substance is formed

Which of these are clues that a chemical change has occurred? Choose all that apply.

• a sound is produced

• the shape of the substance changes

• light is produced

• the size of the matter changes

Ice melts into water. Physical or chemical change?

• physical change

• chemical change

Vinegar and baking soda react to produce bubbles. Physical or chemical change?

• physical change

• chemical change

Someone strikes a match. Physical or chemical change?

• physical change

• chemical change

Rust forms on iron. Physical or chemical change?

• physical change

• chemical change

Dry ice is left at room temperature and turns directly into a gas. Physical or chemical change?

• physical change

• chemical change

A new substance has been produced. Physical change or chemical change?

• physical change

• chemical change

A wrecking ball smashes a building into rubble and dust. Physical change or chemical change?

• physical change

• chemical change