1. Physical and Chemical Properties

2. Properties Every piece of matter we come in contact with has unique characteristics that make that matter the way it is. The characteristics are called properties.

3. Properties There are two types of properties. –Physical Properties –Chemical Properties

4. Physical Properties A physical property is any characteristic of a material that can be observed with out changing the composition of the material.

5. Physical Properties There are 7 main physical properties. –Density –Viscosity –Conductivity –Malleability –Hardness –Melting point and Boiling point

6. Density Density is the amount of matter in a given volume. An objects density is the object’s mass divided by its volume. D= m/v

7. Viscosity Viscosity is a liquids resistance to flowing. Basically how runny it is. High Viscosity = thick liquid EX: cold honey Low Viscosity = thin, runny liquid Ex: Water

8. Conductivity Conductivity is the ability to allow heat to flow through a material. Materials that are good conductors of heat are usually also good conductors of electricity.

9. Malleability Malleability is the ability of a solid to be hit with out shattering.

10. Hardens Hardness is how resistant a material is to being scratched.

11. Melting Point and Boiling Point Melting point is the temperature at which a material changes from a solid to a liquid. Boiling point is the temperature at which a material changes form a liquid to a gas.

12. Chemical Properties Chemical Properties can only be observed when a material is changing into a new substance.

13. Chemical Properties There are two main chemical properties. –Flammability –Reactivity

14. Flammability Flammability is a materials ability to burn in the presence of oxygen.

15. Reactivity Reactivity is how easily a substance combines chemically with another substance.