Big Idea 9: Physical and Chemical Changes

Burning candle wax is an example of what type of change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A candle wick burning is an example of what type of change?

• Physical because the wick is getting smaller.

• Chemical because the wick is becoming ash, which is a new substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which change to an object BEST indicates a chemical change?

• a change in size

• a change in odor

• a change in shape

• a change in volume

Tags

NGSS.MS-PS1-2

Which of the following is a chemical change?

• Teeth making food smaller as we chew it.

• Food moving to the stomach after being chewed.

• Stomach acid breaking down food

• None of the above.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Water boiling is an example of what type of change?

• Physical because boiling water forms into the gas form of water called water vapor but does not create a new substance.

• Chemical because the water is changing states and the temperature increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following changes would result in a new material?

• Crushing a can

• Melting popsicle

• Burning wood

• Boiling water

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Howard burned a piece of wood. Which explains what happened to the wood once the fire burned out?

• a physical change occurred

• a new substance was formed

• a chemical change did not occur

• the wood became gas and blew away

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Lauren left her metal scooter out in the rain. After some time, the scooter developed rust. What happened to the scooter?

• It underwent a physical change.

• It underwent a chemical change.

• It can change back to metal again.

• It underwent a change that created the same substances.

Tags

NGSS.MS-PS1-2

Which of the following will result in a substance with new chemical properties?

• Cutting wood

• Breaking a mirror

• Shredding a newspaper

• Roasting marshmallows

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What is the best definition of a physical change?

• a change that gives off heat

• a change in size, shape, or state

• a change that causes bubbles to form

• a change that makes a new substance