Physical and Chemical change

A physical change is a

• Change which produces no new substance

• Change which produces new substance

• Irreversible change

• All of these

What happens to the molecules during a physical change?

• They disappear completely

• They form new chemical bonds

• They break apart into smaller molecules

• They rearrange but do not change their chemical composition

Which of the following processes is NOT a physical change?

• Boiling water

• Freezing juice

• Burning paper

• Cutting a fruit

Chemical change is a

• Temporary change

• Produces no new substance

• Irreversible change

• None of these

What is a characteristic of a chemical change?

• It only affects physical properties

• It does not involve energy changes

• It produces a new substance

• It can be easily reversed

During a chemical change, what happens to the bonds between atoms?

• They only form

• They only break

• They remain unchanged

• They are formed and broken