Understanding Physical and Chemical Changes

Iron rusts.

• Chemical change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Baking a cake by mixing flour, sugar, chocolate powder, eggs, and milk, and then heating them in the oven.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Green bananas turning yellow on their own as they ripen.

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

NGSS.MS-LS1-5

Is Gatorade powder dissolving in water physical or chemical change?

• Physical 

• Chemical

Tags

NGSS.MS-PS1-2

What is a physical change?

• A change that results in the formation of new substances.

• A change that affects the form of a chemical substance, but not its chemical composition.

• A change that involves the breaking and forming of chemical bonds.

• A change that is always irreversible.

What is a chemical change?

• A change that only affects the physical appearance of a substance.

• A change that involves the formation of new chemical substances.

• A change that can be easily reversed by physical means.

• A change that does not involve any energy change.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an example of a physical change?

• Burning wood

• Melting ice

• Rusting iron

• Baking a cake

Tags

NGSS.MS-PS1-4

Which of the following is an example of a chemical change?

• Dissolving sugar in water

• Freezing water into ice

• Digesting food

• Cutting paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT a difference between physical and chemical changes?

• Physical changes are usually reversible, while chemical changes are not.

• Chemical changes result in new substances, while physical changes do not.

• Physical changes involve energy changes, while chemical changes do not.

• Chemical changes involve the breaking and forming of bonds, while physical changes do not.

Tags

NGSS.MS-PS1-4

Which of the following is an indicator of a chemical reaction?

• Change in shape

• Change in temperature

• Change in size

• Change in state

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4