1. _____ The atomic # of Carbon is 6 which means it has 6 protons and 6 electrons.

2. _____ The # of neutrons = mass # - atomic #.

3. _____ Isotopes are the same elements with different numbers of electrons.

4. _____ The following are correct electric symbols: Q = charge, I = voltage, E = energy.

5. _____ The following are correct electric units: charge in coloumbs, energy in joules.

6. _____ A neutral object is repelled by a charged object.

7. _____ A negative object is repelled by another negative object.

8. _____ The density of an object is calculated by: mass x volume.

9. _____ M = D/V.

10. _____ A Bohr (shell) diagram for nitrogen would have 2 electrons in the first shell and 7 electrons in the

second shell.

11. _____ The second shell of an atom can hold a maximum of 8 electrons.

12. _____ Outer electrons of an atom are called "valence" electrons.

15. _____ During ionic bond formation, a metal atom loses electrons (which becomes negatively charged) to a

non-metal atom (which becomes positively charged).

the 2 ions then attract each other.

17. _____ In question #16 above, both Na and Cl achieve full outer shells of electrons.

18. _____ In covalent bonding, ions are formed that share electrons.

20. _____ In electricity, Q = I/t.

21. _____ In electricity, I = current and is measured in volts.

22. _____ 1 ampere = 1 coulomb/second.

23. _____ In electricity, V = E/Q. Where V = volts and E = electrons.

24. _____ In electricity, R = V/I. Where R = resistance measured in ohms.

25. _____ Ohms law is: V = I x Q.

26. _____ In drawing electrical circuits, the negative terminal of a battery is the long vertical line and the positive

terminal is the short vertical line.

27. _____ Electrons leave the negative terminal and return to the positive terminal of a battery.

28. _____ Examples of electrical "loads" are bulbs and heating coils.

29. _____ Electrical loads have high resistance that hinder the passage of protons through them.

30. _____ When an ebonite rod is rubbed with fur, the rod becomes negative as it gains protons.

31. _____ If an ebonite rod rubbed with fur touches a pith ball, the ball becomes negatively charged.

32. _____ After touching the pith ball in #31 above, the ball will be attracted to the ebonite rod.

33. _____ A neutral object is drawn with equal numbers of positive and negative charges.

34. _____ Drawings on the exam can be done in pen or pencil but must be large and clear.

35. _____ A glass rod has a greater pull on electrons than a plastic bag.

36. _____ When a positive glass rod is brought close to a metal leaf electroscope, the leaves repel because they

are positively charged.

37. _____ Charging by induction occurs when a charged rod touches a neutral object.

38. _____ In the reaction: A + B ----> C, the reactants are A + B and the product is C.

39. _____ copper + oxygen ----> copper oxate.

40. _____ potassium + chlorine + oxygen ----> potassium chlorate.

41. _____ Colour is a qualitative physical property of matter.

42. _____ Objects with high lustre tend to sink in water.

43. _____ A heterogeneous mixture has more than one visible particle. An example is water.

44. _____ A homogeneous solution would be apple juice.

45. _____ An example of a pure substance is human blood.

46. _____ The release of light, heat, and sound indicates a physical change.

47. _____ According to particle theory, all particles are at rest until heated.

49. _____ The alkali metals include sodium and calcium and are in Group 1.

50. _____ The halogens have a valence of 7 and include Cl and Br.

51. _____ Noble gases such as fluorine have a filled outer shell so they are stable or inert.

52. _____ When writing atomic notation for an element, the mass # is above the atomic #.

53. _____ Neutrons and protons are located in the nucleus of an atom and electrons are outside the nucleus

travelling in paths called "isotopes".

54. _____ When connected to an 8 Volt battery, a 9 V bulb is less bright than a 10 V bulb.

55. _____ When 2 batteries are connected in series the overall voltage is higher than if they are connected in

parallel.

56. _____ Connecting batteries in parallel does not increase the overall voltage but allows the batteries to last

longer.

57. _____ If 2 bulbs are connected in parallel and one goes out the other also goes out.

58. _____ The higher the voltage of a battery, the greater the energy given to each coulomb of charge.

59. _____ The bottom of a thundercloud is positively charged and induces a negative charge on the ground.

60. _____ When an object is discharged, excess charge (electrons) enter or exit it to "ground".

61. _____ To measure E/Q use a voltmeter, to measure Q/E use an ammeter.

62. _____ The following are correct valences: alkali metals=1, alkaline earth metals=3, halogens=7.