What is a Physical Change? A physical change alters the form of a substance, but does not change it to another substance. Example: Making Orange Juice

What is a Physical Change? The matter remains the same. The original substance is able to be recovered.

What is a Chemical Change? When a substance undergoes a chemical change, it is changed into a different substance with different properties. Example: Baking a Cake

5 Signs of a Chemical Change Color Change Precipitation

Leaves Changing Color Chlorophyll (green pigment) of the leaves begins to breakdown Different chemical pigments are produced as a result (yellow, orange, red) CHEMICAL CHANGE! (Different substance produced)

5 Signs of a Chemical Change Gas Production Temperature Change

5 Signs of a Chemical Change Changes in Characteristic Properties (odor, light given off)

Chemical or Physical Change? Cutting paper?

Chemical or Physical Change? Ice melting?

Chemical or Physical Change? Toast burning?

Chemical or Physical Change? Rocket fuel burning?

Chemical or Physical Change? Sawing wood?

Chemical or Physical Change? Metal rusting?

Chemical or Physical Change? Disappearing puddle?

Let Me Explain With your neighbor, discuss why a disappearing puddle is a physical change. Be ready to share answers!