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# Kinetic Model of Matter

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• ### Kinetic Model of Matter

1. 1. Kinetic Model of Matter CHANG, FANG-HSIN @ EDISON CHANG PGDE (Sec), July 2006
2. 2. Kinetic Model of Matter By the end of this lesson, you should be able to: <ul><li>1. Use Kinetic Model of Matter to: </li></ul><ul><ul><li>compare the physical properties ; and </li></ul></ul><ul><ul><li>decribe the molecular structure </li></ul></ul><ul><ul><li>of the three states of matter: Gas , Liquid and Solid . </li></ul></ul><ul><li>2. Understand that Brownian Motion proves Kinetic Model of Matter . </li></ul><ul><li>3. Describe the relationship between temperature and molecular motion . </li></ul><ul><li>4. Explain pressure of a gas in terms of its molecular motion . </li></ul>
3. 3. Part One
4. 4. CAN YOU SEE? m a croscopic m i croscopic
5. 5. CAN YOU SEE? m a croscopic m i croscopic
6. 6. What is this stuff ? What is the Matter ?
7. 7. Matter = things , ‘ stuff’ and… YOU
8. 8. What is Matter ? What are YOU made of ?
9. 9. Mobile Phone Model to represent the real thing =
10. 10. Scientific Model = solid to represent the real thing
11. 11. Scientific Model to represent the real thing = water molecule =
12. 12. Matter can MOVE Brownian Motion How do we know? Here is the proof 
13. 13. random movement of Liquid or Gas molecules Brownian Motion Matter can MOVE
14. 14. Dead Cells Brownian Motion Matter can MOVE http://www-micro.msb.le.ac.uk/video/brownian.mov get pushed around by
15. 15. Matter can MOVE + = Kinetic Energy
16. 16. Kinetic Model of Matter Matter is made of moving molecules
17. 17. Name 3 States of Matter
18. 18. Name 3 States of Matter Gas Liquid Solid
19. 19. Kinetic Model of Matter = Gas = flowing water molecule
20. 20. Kinetic Model of Matter = Liquid = flowing water molecule
21. 21. Kinetic Model of Matter = Solid = vibrating water molecule
22. 22. Hold on a second!
23. 23. Are you telling me that ICE CUBES are actually vibrating ?
24. 24. !!! YES !!! Are you telling me that ICE CUBES are actually vibrating ?
25. 25. WHY ?
26. 26. CAN YOU SEE? m a croscopic m i croscopic
27. 27. CAN YOU SEE? m a croscopic m i croscopic
28. 28. m a croscopic Can you see ice cubes vibrate when they are becoming flowing water ?
29. 29. m a croscopic Can you see ice cubes vibrate when they are becoming flowing water ? NO
30. 30. vibrating m a croscopic m i croscopic flowing But are ice cubes actually vibrating when they are becoming flowing water ?
31. 31. vibrating m a croscopic m i croscopic flowing But are ice cubes actually vibrating when they are becoming flowing water ? YES
32. 32. During melting , ice cubes are vibrating to break the attrative force that holds water molecules together to become flowing water.
33. 33. Part Two
34. 34. Kinetic Model of Matter
35. 35. Kinetic Model of Matter
36. 36. Who is HOT ???
37. 37. 100 °C 0 °C
38. 38. Who is HOT ???
39. 39. Higher Temperature
40. 40. Kinetic Model of Matter ? Kinetic Energy ?
41. 41. Kinetic Model of Matter
42. 42. Kinetic Model of Matter ? Attractive Force ?
43. 43. Kinetic Model of Matter
44. 44. Kinetic Model of Matter ? Motion ?
45. 45. Kinetic Model of Matter Vibrate Flow at fixed position Slow Fast all over the place
46. 46. Kinetic Model of Matter ? Shape ?
47. 47. Kinetic Model of Matter Fixed Changing with the shape of container
48. 48. Kinetic Model of Matter ? Distance between Molecules ?
49. 49. Kinetic Model of Matter
50. 50. Kinetic Model of Matter ? Can be Compressed ?
51. 51. Kinetic Model of Matter NO NO YES! ? Can be Compressed ?
52. 52. Liquid Nitrogen Gas Nitrogen 25 ° C -72 ° C COMPRESS
53. 54. Liquid Nitrogen Gas Nitrogen 25 ° C -72 ° C DECOMPRESS
54. 56. LIVE
55. 58. Hand burnt by Liquid Nitrogen
56. 60. Large Volume Small Volume COMPRESS CO 2
57. 61. Large Volume Small Volume DECOMPRESS CO 2
58. 62. Large Volume Small Volume DECOMPRESS HOW? CO 2
59. 63. Large Volume Small Volume DECOMPRESS
60. 64. DECOMPRESS ? CO 2
61. 65. DECOMPRESS ? <ul><li>Speed ? </li></ul><ul><li>Volume ? </li></ul>CO 2
62. 66. LIVE +
63. 67. DECOMPRESS ? <ul><li>Speed Faster </li></ul><ul><li>Volume Larger </li></ul>CO 2
64. 68. Pressure Speed of molecular motion
65. 69. http://eepybird.com/exp214.html You’ve seen nothing yet!
66. 70. Homework Play Gas Law Program to find out the relationships between: Pressure Molecular Motion V.S Molecular Motion V.S Temperature
67. 71. http://intro.chem.okstate.edu/1314F00/Laboratory/GLP.htm Gas Law Program