Physical and Chemical Changes

A different chemical substance is formed when...

• water boils

• metal rusts

• ice melts

• rock is crushed

What type of change takes place when a pond freezes in winter?

• physical change

• chemical change

• material change

• no change

A chemical change creates a

• change in volume

• new substance

• mixture

• no change

Your friend decides to make toast, but he leaves it in the toaster too long. It is now burnt and the kitchen is full of smoke. What type of change is this?

• Physical change

• Chemical change

Food coloring is dropped into water to give it color.

• chemical change

• physical change