1. Why does AIR have matter? Observe Matter Questions  Was anything in the cup besides the paper? If so, what was it?  Feel the paper towel, is it dry or wet?

2. Matter What is it?

3. Matter is … The amount of MASS in an object and the amount of space an object takes up (VOLUME).

4. What Matter is not… Light & Heat Anything that does not take up space.

5. Physical States of Matte r

6. Solid Has definite shape and definite volume Examples …

7. Liquid It will fill up the shape of a container and has definite volume. Example …

8. Gas Fills a container of any size or shape. Example …

9. What about Plasma? Not normally found on Earth; similar to gas Example Northern Lights Ball Lightning Fluorescent light bulb

10. Physical Properties What are they?

11. 5 Senses Anything that we can identify with our five senses – except SMELL & TASTE WHY? Smell and taste use chemical receptors in the mouth and nose

12. Measurements Any size or shape… Size, Volume, Area, Diameter, Radius, Mass, Density, Length, Shape, Temperature, …

13. More Properties… Melting Point– point at which matter melts. Freezing Point. – the point at which matter freezes. Boiling Point. – the point at which matter boils.

14. Metallic Properties Magnetic attraction – the attractions between metals. Malleability – ability TO BE hammered into thin sheets. Ductility – ability TO BE drawn into thin wires. Luster - shiny ; reflective

15. Chemical Properties Any characteristic that gives a substance the ability to undergo a change that results in a new substance

16. Chemical Properties  Flammability (able to burn)  Ability to react with oxygen  Ability to react with acids

17. Law of Conservation of Matter Matter is neither created nor destroyed. It only TRANSFORMS. For Example

18. Wood + Oxygen Ash + Gases + Water

19. Physical Change When a physical property is changed but the matter remains the same

20. It’s a physical change if…  It changes shape or size  It dissolves.  Some can be changed back

21. Examples Water boiling Glass broken Sandpaper on a piece of wood Etc…

22.  Change in the identity of the substance Chemical Change

23. NaHCO 3 + CH 3 COOH CH 3 COO - Na + + H 2 O + CO 2 Sodium bicarbonate and vinegar => Sodium acetate and water and carbon dioxide Heat is released Baking Soda + Vinegar

24. It’s a chemical change if….  It burns  Temperature changes without heating/cooling

25. It’s a chemical change if...  It bubbles (makes a gas)  Reacts with acid

26. It’s a chemical change if...  It changes color  It forms a precipitate (a solid)

27. It’s a chemical change if...  Corrosion (Rust or Oxidation)

28. What kind of change is it if someone...  Tears up paper?  Physical change  Mixes salt and water?  Physical change

29. What kind of change is it if someone...  Burns paper?  Chemical change  Evaporates salt water?  Physical change

30. How is a burning candle both?