1. Monday 10/07/13 How can a substance be indentified?
By physical and chemical properties

2. Tues 10/8
2. What measurements are needed to find density? Mass = grams (g) Volume = ml ( liquid ) cm3 (solid) Density = Mass /Volume

3. Wood block
White tile
Styrofoam
Marble
Rock

4. Thur 10/10
3. List evidence of a chemical change or reaction. Color change(?) rust corrode oxidize Gas Light Precipitate Temperature

5. Fri 10/11
4. Physical or Chemical P C

6. Tue 10/15
5. Element or Compound compound

7. Wed 10/16 6.

8. Thursday 10/17
7. Elements in each? Oceans Living matter Atmosphere Earth’s crust

9. Thursday 10/17
Elements in each? Oceans – H,O,NaCl Living matter – C, H, O, Atmosphere – N, O, CO2 Earth’s crust - O, Si, Fe

10. Thursday 10/17 7. Chemical or physical properties
state at room temperature
melting point
freezing point
color
density /specific gravity
solubility
conductivity
magnetic

11. Fri 10/18
8. Where are the metals, non-metals, and metalloids located on the periodic table? Metals Non-metals Metalloids

12. Mon 10/21
9. Find the density.
25 g

13. Tue 10/22
10. Name a physical property of a metal. Conductor Shiny luster

14. Wed 10/23
11.A bar of soap is 12 cm tall, 6 cm wide, and 10 cm long. It has a mass of 415 grams. What is the density of the bar of soap. (round to 2 places behind the decimal point) D=M/V 12cmx6cmx10cm=720 cm3 D=415g / 720cm3 D=0.58 g/cm3

15. Thur 10/24
12. What mineral is it? Mass 96.5 g, volume 5 cm3, has shiny luster, and malleable. Use P g/cm3 Gold

17. Today 30,000 per kg
$7,500,000

18. Density
Periodic table
Minerals
Energy
Energy Transformations Heat transfer Movement of heat Chemical change

19. D = M/V D = _____ g/cm3 (solids) D = _____ g/ml (liquids)
Grams/ balance - scale Volume/ LxWxH - ruler Volume/ displacement (graduated cylinder)

20. Minerals Solid Natural Inorganic Crystal structure Chemical formula
How to indentify: Hardness- mohs scale 1-10 Color – sometimes Streak – color of powder Luster – metallic or non metallic Density and fracture

23. Conductor - electricity
Malleable – hammer
Ductile – bend
Luster – shiny, dull
Semi-conductor - metalloids

24. Label , color, list metalloids.

25. Conductor - electricity Malleable – hammer into sheets Ductile – bend, without breaking Luster – shiny, dull Semi-conductor - metalloids

26. A or D B
B or C A D C B D C 3

27. Work on cut and paste
Copy picture below , use plain paper

28. Jolene wants to experiment with sugar cubes
Jolene wants to experiment with sugar cubes. Which of the following causes a sugar cube to only change physically, not chemically? a) burning the sugar cube with a match b) crushing the sugar cube and dissolving it in water c) dehydrating the sugar cube with sulfuric acid d) chewing the sugar cube and digesting it

29. Finish Phy and chm change cut and paste
Work on BM review

31. Common Elements What common elements are in each
Common Elements What common elements are in each? Draw something , and circle the elements that will help you remember.
1. Atmosphere
2. Living matter
3. Earth’s crust
4. Oceans

33. 19. Label the graphs. Atmosphere Earths Crust Oceans

35. Oceans

41. ____________ glass breaking
____________ mixing salt and water
2. ____________ hammering wood together 11. ____________ mixing oil and water
3. ____________ a rusting bicycle 12. ____________ water evaporating
4. ____________ melting butter 13. ____________ cutting grass
5. ___________ separate sand from gravel 14. ____________ burning leaves
6. ____________ bleaching your hair
15. ____________ fireworks exploding
7. ____________ frying an egg 16. ____________ cutting your hair
8. ____________ squeeze oranges for juice 17. ____________ crushing a can
9. ____________ melting ice 18. ____________ boiling water

44. If I mix two liquids together and it changes color, then it is a physical change.

46. Common Elements What common elements are in each
Common Elements What common elements are in each? Draw something , and circle the elements that will help you remember
Atmosphere N O
CO2
2. Living matter C H
3. Earth’s crust Si Fe
4. Oceans
NaCl

48. Title Physical vs. Chemical
Physical properties p. 26
Physical change p. 30
Chemical properties p. 26
Chemical change p. 31

49. 1. A physical property is a characteristic of a substance that can be observed without changing the substance into something else.

50. 2. physical change - change that alters the form or appearance of a material but does not make the material into another substance.

51. 3. Chemical Property - is a characteristic that is observed when a substance interacts with another substance. Ex: matches will burn

52. 4. Chemical Change - occurs when a substance combines with another to form a new substance Ex: Match burning

53. 5.

54. 6.

55. Go to strack page quick links textbook username - strack Password - stracktx Click on science not active use lang arts Username - k then 6 digit iD# Password - Books6

56. A. Physical properties - A quality or condition of a substance that can be observed or measured without changing the substance's condition. some examples:
state at room temperature
melting point
freezing point
color
density /specific gravity
solubility
conductivity
magnetic

57. 2. All substances have definite properties,
A. Physical properties / physical change - "things it can do alone" definition - A quality or condition of a substance that can be observed or measured without changing the substance's condition. some examples:
state at room temperature
melting point
freezing point
color
density /specific gravity
specific heat
polarity
solubility
conductivity
magnetic
malleability
Substances that are combined without reacting are called mixtures, to learn more about mixtures.
Substances that react to one another and chemically bond are called elements or compounds.
B. Chemical properties / chemical change - "it takes two to tango"
definition - How a substance reacts to other substances. When one or more substances react they become a third, unique, substance often with new physical and chemical properties. some examples:
oxidation - rusting or burning
flammability
in a chemical reaction there are reactants and products, these occur in definate proportions.
chemical reactions are predictable and repeatable
there are also definate clues that a reaction has taken place including:
change in physical properties
color change
gas given off
temperature change
Law of conservation of matter / mass
Matter can never be created nor destroyed. All matter that is present before a chemical reaction occurs is also present after the reaction, although it may be in a new compound.