Physical v. Chemical Changes

What is a chemical change?

• A change that changes the color of something

• A change that changes the shape of something

• A change that happens on a molecular level

• A change that doesn't matter

What is a physical change?

• A change that creates a new substance

• A change that changes the shape or size of nothing

• A change that changes the shape or size of something

• A squirrel

Chemical changes are _eversible.

Physical changes are not _eversible.

What change is lighting wood on fire?

• Physical

• Chemical

What change is squishing a marshmallow?

• Physical

• Chemical

• Mechanical

What change is water transitioning between states of matter?

• Physical

• Chemical

• Mechanical

Select all evidence of a chemical change.

• Change in color

• Bubbles forming

• Formation of a precipitate

• Change in odar

_ new substances are formed in a physical change.

Is the formation of fossil fuels a physical or chemical change?

• Physical

• Chemical