Physical and Chemical Changes

When does a physical change occur?

• When molecules combine to form a compound

• When a new element is created

• When the size, shape, or state of matter changes

• When elements combine to form a molecule

Which type of change can be reversed?

• A physical change

• A chemical change

• A molecular change

• A electric change

Which of the following would cause the molecules in matter to change?

• a moderate climate

• pressure

• motion

• extreme heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If a substance changes color, what has most likely happened?

• A pressurized change has taken place.

• A chemical change has taken place.

• A physical change has taken place.

• Nothing has taken place.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Stepping on a bag of potato chips would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Chopping wood would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Iron rusting would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Cooking an egg would cause which type of change?

• mechanical

• thermal

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

Cutting paper into smaller pieces would cause which type of change?

• mechanical

• physical

• thermal

• chemical

Dissolving sugar into water would cause which type of change?

• chemical

• physical

• thermal

• mechanical