1. Physical and Chemical Properties

2. Physical Properties
Can be observed and measured without changing the kind of matter being studied

3. The rate at which a substance transfers heat
Thermal Conductivity
The rate at which a substance transfers heat

4. Magnetism
Property of some materials to attract iron or objects containing iron

5. The ability of a substance to dissolve in another substance
Solubility
The ability of a substance to dissolve in another substance

6. State
The physical form in which a substance exists, such as a solid, liquid, or gas.

7. The ability of a substance to be pulled into a wire.
Ductility
The ability of a substance to be pulled into a wire.

8. Electrical Conductivity
Describes how freely charges can move in a material.

9. Malleability
The ability of a substance to be rolled or pounded into thin sheets.

10. Melting point
The temperature at which a substance changes from a solid to a liquid at a given pressure
water = 0oC
32°F

11. Boiling point
The temperature at which a substance changes from a liquid to a gas at a given pressure
water = 100oC
212°F

12. Specific Heat
The amount of energy needed to change the temperature of 1 kg of a substance by 1°C

13. Density
Is the mass per unit volume of a substance
D=M V

14. Color
Used to identify a substance
Observed
Absence of color

15. Identify a substance by the way it smells or does not smell
Odor
Identify a substance by the way it smells or does not smell

16. Physical Change
Does not change the composition of a substance only the physical property

17. Evidence of Physical Change
Change in state
Example: Melting of cheese
Evaporation of water
Sublimation of air freshener
Change in size
Example Cutting, Tearing,
and Breaking
Change in shape
Example Dissolving,
Stretching or Wrinkling

18. Chemical Properties
Describe matter based on its ability to change into new matter that has different properties

19. Flammability
The ability of a substance to burn.

20. Combustibility
Is the amount of energy that is released as heat when a substance is burned with oxygen.

21. Reactivity
The ability of two or more substance to combine and form one or more new substance

22. Reactivity Oxygen Quickly produce light and heat
Slowly produces rust on iron and apples turn brown

23. Reactivity
Acid
A substance ability to react with an acid and form a new substance.

24. Chemical Change
Results in the formation of one or more new substances with new chemical and physical properties

25. Indicators of a chemical change:
Evolution of Light
Evolution of Heat
Temperature Change
Evolution of gas
Bubbles
Color Change
Oxygen reacts with iron and turns it red
Formation of precipitate
2 solution are added together and form a solid

26. Examples of a Chemical Changes
Burning
Digesting food
Reacting with other substances
A chemical change is called a chemical reaction