1. Physical and Chemical Properties PowerPoint by: Katherine Pease Idea from: Garland ISD

2. How would you describe a lemon to someone who had never seen one?

3. Did you say anything about…  Color  Texture  Taste  Hardness  Size  Acidity (pH)  Burns eyes

4. You use the properties of an object to describe it.  All matter has Chemical and Physical Properties.

5. Copy the chart below into your own journal. Record you observations of the lemon. Properties Before lab After lab Color Shape Length Mass

6. Physical Properties  Can be measured or observed without changing the identity of the object.

7. Example of Physical Properties…  Color  Shape  Length  Volume  Mass  Density

8. Density is a measure of something’s mass in proportion to it’s volume.

9. Density = Mass/Volume Mass Volume

10. Things that are more dense have more mass per unit of volume than other things.

11. Chemical Properties are …  Based on how a substance reacts to other types of matter.

12. Examples of Chemical Properties…  Flammable  Reacts with Oxygen  Reacts with Light  Reacts with Water