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5. mixturesGas laws States of Matter 10 Point 20 Points 30 Points 40 Points 50 Points 10 Point 20 Points 30 Points 40 Points 50 Points 30 Points 40 Points 50 Points Pure substances Chemical/ Physical Properties

6. Which of the following IS a physical change? Sawing wood Burning a marshmallow Rusting of a nail

7. Sawing wood

8. Which of the following IS a chemical change? Bursting a balloon Boiling water Rotting of an egg

9. Rotting egg

10. Give two examples of physical properties

11. Shape, size, color, flow, phase change

12. Give two examples of chemical properties

13. Flammability, ability to rust, corrode, rot

14. Filtering saltwater is what type of change?

15. physical

16. Give an example of a homogeneous mixture

17. Koolaid, etc.

18. Chocolate chip cookie dough is an example of what type of mixture?

19. heterogeneous

20. Muddy river water is an example of what?

21. suspension

22. What are the two types of homogeneous mixtures?

23. Colloid solution

24. Give two similarities for homogeneous and heterogeneous mixtures.

25. Types of matter Mixtures Separated physically 2+ substances

26. Which of the following is a compound? Hydrogen Water Carbon nitrogen

27. Water (H 2 O)

28. What are the two types of pure substances?

29. Compound Element

30. An atom of magnesium can be described as what type of pure substance?

31. element

32. FREE

33. Question 4c

34. How does a compound differ from a mixture?

35. Can NOT be easily broken down into smaller parts

36. What law states that as temperature of a gas increases, volume increases?

37. Charles’s Law

38. What law states that if the volume of a gas decreases, pressure increases

39. Boyle’s Law

41. C. Decrease the volume of the cylinder

44. A pilot can change the altitude of a hot air balloon by changing the temperature of the gas inside the balloon. Using density, explain how this works.

45. Hot air has less density than cold air. The lower the density, the more it will rise.

46. What is the shape and volume of a solid?

47. Definite shape and volume

48. What does substance A, B and C represent?

49. A- Solid B- Liquid D- gas

50. What is the shape and volume of a liquid?

51. Shape- indefinite Volume- definite

52. What is the boiling point of the substance?

53. 100 degrees C

54. What state of matter is the substance in at 55 oC ?

55. Liquid

56. Make your wager

57. You are testing to see how caffeine effects the heart rate of water flees. Two groups of water flees were tested. Group one received 300mg of caffeine and group two received no caffeine. The water temperature was kept at 20 degrees celcius for both groups. a)Independent variable b)Dependent variable c)Constant d)control

58. You are testing to see how caffeine effects the heart rate of water flees. Two groups of water flees were tested. Group one received 300mg of caffeine and group two received no caffeine. The water temperature was kept at 20 degrees celcius for both groups. –Independent variable - caffeine –Dependent variable - heartbeat –Constant – water temp, pop size –Control – group 2