Ch 2 & 3 Review Sheet Answers (from Review Sheet Given in Class)10pm 5/13

2. 7

4. 4

6. 1

8. 2

10. outer shell electrons are shared by two atoms so as to satisfactorily fill the outer electron shells of both

12. hydrogen bonds

14. the attraction between the H of one water molecule and the O of another water molecule

16. 15 protons. 15 electrons. .

18. 16

20. 14 silicon

22 H-0

24 ionic

26 7

28 has 8 electrons in the outer electron shell & is inert.

30 8 protons. & 8 electrons.

32 atomic number.

34 Each hydrogen atom has a partial positive charge.

36 2 more neutrons than carbon 12.

38 number of neutrons

40 protons and neutrons.

42 carbon, hydrogen, nitrogen, oxygen

44 outer shell electrons are shared by two atoms so as to satisfy the outer electron shells of both.

46 covalent hydrogen ionic polar covalent

48 reactions continuing with no effect on the concentrations of react and products

50 destabilized and hydrogen bonds are broken.

52 a hydrogen bond

54 gasoline

56 the bond between the H of one water molecule and the 0 of another water molecule

58 seawater at pH 8

60 releasing H+ in basic solutions.

62 All are properties related to hydrogen bonding.

64 tends to prevent great fluctuations in pH.

66 All are properties related to hydrogen bonding

68 the amount of heat energy required to raise one kilogram of water one degree Celsius

70 release of heat by formation of hydrogen bonds

72 Hydrogen bonds keep the molecules of ice farther apart than in liquid water.

74 cohesion adhesion surface tension

76 hydrogen

78 Dissolve 180 g of glucose in water, and then add more water until total volume of the solution is one liter.

80 B

82D