Physical and Chemical Changes

A physical change...

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

A chemical change

• changes the physical properties of an object, but does not create a new substance.

• creates a new substance and cannot be undone.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which is NOT a phase change?

• melting

• freezing

• burning

• evaporation

In a chemical change, atoms rearrange to make new compounds.

• true

• false

The same elements are present before and after a chemical change.

• true

• false

a physical change does not produce and entirely new substance

• true

• false

a chemical property can be observed without changing the identity of a substance.

• true

• false

The new material formed in a chemical reaction is called...

• atom

• element

• product

• reactant

As long as a substance _________, it is a physical change.

• becomes a new substance

• doesn't become a new substance

• bubbles

• boils

Ice melting is a....

• physical change

• chemical change

• chemical reaction

• none