1. Properties of Matter Review & Changes Notes Wednesday, September 2 nd, 2015

2. What is it?

6. Pencil CH 3 COOH N 2 Aluminum (Al) Basketball Methane (CH 4 ) Ice Cream Zr

7. Properties of Sodium (Na) Silvery Grey Color 30 grams Atomic Mass: 22.99 g/mol Melting Point: 97.5°C Can cut it with a knife When exposed to air and cut loses it’s grey color Has 3 isotopes Boiling Point: 883 °C Density: 0.97g/cm 3 Each flake is 4.21cm long Reacts quickly with water, snow, ice (highly explosive) Reacts with chlorine to form table salt

8. Physical PropertiesChemical Properties Grey Color 30 grams Atomic Mass Melting Point Boiling Point Density 3 isotopes Cut with knife 4.21cm flakes Exposed to air, loses color Highly explosive in water Reacts with chlorine to form table salt

9. Physical Change Physical properties (appearance) can change while the composition remains the same. A change in size, shape, or state of matter in which the identity remains the same is called a physical change.

10. Chemical change A change of one substance into another is a chemical change. Burning a log Formation of rust on a nail Rotting eggs Putting alka-seltzer in a glass of water ****Look for clues such as heat formation, the formation of bubbles/solids in a liquid, smell, or color change

12. Base on the previous notes classify the following as a physical property, physical change, chemical property, chemical change: a) Evaporation of water b) Tearing paper c) Burning paper d) The fact that water is a liquid e) The fact that wood can burn

13. Base on the previous notes classify the following as a physical property, physical change, chemical property, chemical change: a) Evaporation of water - physical change b) Tearing paper - physical change c) Burning paper - chemical change d) The fact that water is a liquid - physical property (intensive) e) The fact that wood can burn - chemical property *** Check online tonight for more review/practice identifying properties & changes ***