2. Ch 16 Electricity Ch 10 prop of matter Ch 12 atoms periodic table Ch 21 solutions Scientific method Graphs 10 20 30 40 50

3. Question 1 - 10 Which of the following is the symbol used to represent a light bulb in a circuit diagram? AB CD

4. Answer 1 – 10 B

5. Question 1 - 20 An inflated balloon that has been rubbed against a person’s hair is touched to a neutral wall and remains attached to it. Which diagram best represents the charge distribution on the balloon and the wall? AB CD

6. Answer 1 – 20 B

7. Question 1 - 30 The reading on the volmeter should be approximately:

8. Answer 1 – 30 4.5 volts

9. Question 1 - 40 Materials through which current will not easily flow are called:

10. Answer 1 – 40 insulators

11. Question 1 - 50 When more devices are added to a series circuit, the total circuit resistance:

12. Answer 1 – 50 increases

13. Question 2 - 10 An engineer testing a new material discovers that it breaks at a very low value of strain. The engineer could describe the material as very:

14. Answer 2 – 10 brittle

15. Question 2 - 20 The difficulty with which a fluid may be poured from a container is a measure of its:

16. Answer 2 – 20 Viscosity

17. Question 2 - 30 The property of gold which would make it most useful in the creation of jewelry

18. Answer 2 – 30 malleable

19. Question 2 - 40 If an object with a density of 2.0 g/cm 3 is placed in a fluid with a density of 1.9 g/cm 3, the object will:

20. Answer 2 – 40 sink

21. Question 2 - 50 The four test tubes shown are each filled to the same level with a different liquid. All the liquids are at the same temperature. Identical marbles were dropped into the test tubes at the same time, and traveled different distances in the same amount of time. Determine the order of highest viscosity to lowest viscosity liquid.

22. Answer 2 – 50 BCAD

23. Question 3 - 10 How many neutrons does a carbon atom with a mass number of 14 and an atomic number of 6, have?

24. Answer 3 – 10 8

25. Question 3 - 20 The atomic mass of nitrogen is:

26. Answer 3 – 20 14.007

27. Question 3 - 30 The atom below that is not like the others

28. Answer 3 – 30 B

29. Question 3 - 40 The group that is the most reactive metals

30. Answer 3 – 40 Group 1, 1A, far left of periodic table

31. Question 3 - 50 As you move from left to right across a period, the number of valence electrons

32. Answer 3 – 50 increases

33. Question 4 - 10 Ice Tea is a solution. The solvent in a glass of Ice tea would be the:

34. Answer 4 – 10 water

35. Question 4 - 20 Identify the solute and solvent of Hot chocolate….

36. Answer 4 – 20 Solute – powder Solvent – water or milk

37. Question 4 - 30 Sugar water is an example of this mixture

38. Answer 4 – 30 Homogeneous

39. Question 4 - 40 Different samples may not be exactly alike.

40. Answer 4 – 40 Heterogeneous mixture

41. Question 4 - 50 The universal solvent

42. Answer 4 – 50 water

43. Question 5 - 10 The type of graph used to show how a part of something relates to the whole is a

44. Answer 5 – 10 Circle graph

45. Question 5 - 20 What type of graph would be the best to use to compare the levels of lead contamination in six water wells?

46. Answer 5 – 20 Bar graph

47. Question 5 - 30 the responding variable

48. Answer 5 – 30 mass

49. Question 5 - 40 Jordan noticed that as he stood farther away from his desk lamp, the light from the lamp seemed dimmer. He borrowed a light meter from his brother, who is a photographer, in order to test his observation. Jordan used the light meter to measure the brightness of his lamp at various distances. Distance is the:

50. Answer 5 – 40 Manipulated variable / independent

51. Question 5 - 50 the variable that changes in response to the manipulated (independent) variable.

52. Answer 5 – 50 Responding / dependent