1. PowerPoint ® Clicker Questions prepared by Mark Hollier, Georgia Perimeter College - Clarkston Campus C H A P T E R © 2013 Pearson Education, Inc.© Annie Leibovitz/Contact Press Images 2 Chemistry Comes Alive

2. © 2013 Pearson Education, Inc. Which of the following is not an example of matter? a) Blood plasma b) Air we breathe c) A hand bone d) Energy

3. © 2013 Pearson Education, Inc. Which of the following is not an example of matter? a) Blood plasma b) Air we breathe c) A hand bone d) Energy

4. © 2013 Pearson Education, Inc. Chemical energy is __________. a) a form of kinetic energy b) energy stored in bonds between atoms c) a form of potential energy d) both b and c

5. © 2013 Pearson Education, Inc. Chemical energy is __________. a) a form of kinetic energy b) energy stored in bonds between atoms c) a form of potential energy d) both b and c

6. © 2013 Pearson Education, Inc. Which of the following is an example of the conversion of potential energy into kinetic energy? a) Synthesis of ATP from glucose b) ATP hydrolysis to drive muscle contraction c) Digestion of protein in the stomach d) Pumping ions across a cell membrane

7. © 2013 Pearson Education, Inc. Which of the following is an example of the conversion of potential energy into kinetic energy? a) Synthesis of ATP from glucose b) ATP hydrolysis to drive muscle contraction c) Digestion of protein in the stomach d) Pumping ions across a cell membrane

8. © 2013 Pearson Education, Inc. The four elements that comprise 96% of living matter are __________. a) carbon, sodium, nitrogen, oxygen b) carbon, hydrogen, sodium, oxygen c) carbon, hydrogen, nitrogen, sodium d) carbon, hydrogen, nitrogen, oxygen

9. © 2013 Pearson Education, Inc. The four elements that comprise 96% of living matter are __________. a) carbon, sodium, nitrogen, oxygen b) carbon, hydrogen, sodium, oxygen c) carbon, hydrogen, nitrogen, sodium d) carbon, hydrogen, nitrogen, oxygen

10. © 2013 Pearson Education, Inc. An atom's nucleus contains __________. a) protons b) neutrons c) electrons d) protons and neutrons

11. © 2013 Pearson Education, Inc. An atom's nucleus contains __________. a) protons b) neutrons c) electrons d) protons and neutrons

12. © 2013 Pearson Education, Inc. The element lithium has 3 protons and 4 neutrons in its nucleus. Its mass number is __________. a) 3 b) 4 c) 7 d) 12

13. © 2013 Pearson Education, Inc. The element lithium has 3 protons and 4 neutrons in its nucleus. Its mass number is __________. a) 3 b) 4 c) 7 d) 12

14. © 2013 Pearson Education, Inc. When atoms of two different elements bind together, they form a(n) __________. a) compound b) mixture c) element d) solution

15. © 2013 Pearson Education, Inc. When atoms of two different elements bind together, they form a(n) __________. a) compound b) mixture c) element d) solution

16. © 2013 Pearson Education, Inc. Which of the following mixture(s) are homogeneous? a) Colloids b) Solutions c) Suspensions d) Both colloids and suspensions

17. © 2013 Pearson Education, Inc. Which of the following mixture(s) are homogeneous? a) Colloids b) Solutions c) Suspensions d) Both colloids and suspensions

18. © 2013 Pearson Education, Inc. The most important determinant of an atom's bonding behavior is __________. a) the number of protons in the nucleus b) the total number of electrons c) the number of valence shell electrons d) the number of neutrons in the nucleus

19. © 2013 Pearson Education, Inc. The most important determinant of an atom's bonding behavior is __________. a) the number of protons in the nucleus b) the total number of electrons c) the number of valence shell electrons d) the number of neutrons in the nucleus

20. © 2013 Pearson Education, Inc. When atoms gain electrons, __________. a) the atoms become electrically neutral b) the atoms become positively charged c) their atomic mass significantly increases d) the atoms become negatively charged

21. © 2013 Pearson Education, Inc. When atoms gain electrons, __________. a) the atoms become electrically neutral b) the atoms become positively charged c) their atomic mass significantly increases d) the atoms become negatively charged

22. © 2013 Pearson Education, Inc. Ionic bonds connect atoms together by __________. a) overlap of valence shells b) charge attractions c) overlap of the nucleus d) attractions between dipoles

23. © 2013 Pearson Education, Inc. Ionic bonds connect atoms together by __________. a) overlap of valence shells b) charge attractions c) overlap of the nucleus d) attractions between dipoles

24. © 2013 Pearson Education, Inc. Covalent bonds occur when __________. a) electrons are shared between atoms b) electrons are transferred between atoms c) electrons are lost d) opposite charges attract atoms together

25. © 2013 Pearson Education, Inc. Covalent bonds occur when __________. a) electrons are shared between atoms b) electrons are transferred between atoms c) electrons are lost d) opposite charges attract atoms together

26. © 2013 Pearson Education, Inc. An atom will tend to be electronegative if __________. a) it lacks only 1–2 electrons in the valence shell b) it easily donates electrons c) it only has 1–2 electrons in the valence shell d) it is negatively charged

27. © 2013 Pearson Education, Inc. An atom will tend to be electronegative if __________. a) it lacks only 1–2 electrons in the valence shell b) it easily donates electrons c) it only has 1–2 electrons in the valence shell d) it is negatively charged

28. © 2013 Pearson Education, Inc. Water, H 2 O, is a polar molecule. Oxygen is electronegative and hydrogen is electropositive. This means that __________. a) each hydrogen pulls electrons away from oxygen and becomes more negative b) the electrons are shared equally c) the oxygen pulls electrons away from hydrogen and becomes more negative d) the oxygen pulls electrons away from hydrogen and becomes more positive

29. © 2013 Pearson Education, Inc. Water, H 2 O, is a polar molecule. Oxygen is electronegative and hydrogen is electropositive. This means that __________. a) each hydrogen pulls electrons away from oxygen and becomes more negative b) the electrons are shared equally c) the oxygen pulls electrons away from hydrogen and becomes more negative d) the oxygen pulls electrons away from hydrogen and becomes more positive

30. © 2013 Pearson Education, Inc. Hydrogen bonds are similar to ionic bonds because __________. a) they both are due to opposite charge attractions b) they both occur between like charged atoms c) they both form molecules d) they are both very strong bonds

31. © 2013 Pearson Education, Inc. Hydrogen bonds are similar to ionic bonds because __________. a) they both are due to opposite charge attractions b) they both occur between like charged atoms c) they both form molecules d) they are both very strong bonds

32. © 2013 Pearson Education, Inc. In a chemical reaction, ___________ join to form __________. a) products; reactants b) molecules; atoms c) formulas; products d) reactants; products

33. © 2013 Pearson Education, Inc. In a chemical reaction, ___________ join to form __________. a) products; reactants b) molecules; atoms c) formulas; products d) reactants; products

34. © 2013 Pearson Education, Inc. Water's unique properties like high heat capacity, high heat of vaporization, and universal solvent can be attributed to its __________. a) oxygen atom b) ability to form hydrogen bonds c) hydrogen atoms d) small size

35. © 2013 Pearson Education, Inc. Water's unique properties like high heat capacity, high heat of vaporization, and universal solvent can be attributed to its __________. a) oxygen atom b) ability to form hydrogen bonds c) hydrogen atoms d) small size

36. © 2013 Pearson Education, Inc. When chemical equilibrium is reached, __________. a) no further net change in the amounts of reactants and products occurs b) more reactants are converted to products in the forward direction c) the chemical reaction no longer occurs d) more products are converted to reactants in the reverse direction

37. © 2013 Pearson Education, Inc. When chemical equilibrium is reached, __________. a) no further net change in the amounts of reactants and products occurs b) more reactants are converted to products in the forward direction c) the chemical reaction no longer occurs d) more products are converted to reactants in the reverse direction

38. © 2013 Pearson Education, Inc. What will be the effect on a chemical reaction if the concentration of reactants is increased? a) The speed of the reaction will slow. b) The speed of the reaction will increase. c) The speed of the reaction will remain unchanged. d) The reaction will now require a catalyst.

39. © 2013 Pearson Education, Inc. What will be the effect on a chemical reaction if the concentration of reactants is increased? a) The speed of the reaction will slow. b) The speed of the reaction will increase. c) The speed of the reaction will remain unchanged. d) The reaction will now require a catalyst.

40. © 2013 Pearson Education, Inc. A substance that is very acidic may have a pH of 1 or 2. This means that the acidic substance __________. a) has a high concentration of OH – ions b) has an equal concentration of OH – and H + ions c) has a low concentration of H + ions d) has a high concentration of H + ions

41. © 2013 Pearson Education, Inc. A substance that is very acidic may have a pH of 1 or 2. This means that the acidic substance __________. a) has a high concentration of OH – ions b) has an equal concentration of OH – and H + ions c) has a low concentration of H + ions d) has a high concentration of H + ions

42. © 2013 Pearson Education, Inc. A buffer will release H + ions if the blood pH __________. a) rises (becomes more basic) b) falls (becomes more acidic) c) stays the same d) becomes neutral

43. © 2013 Pearson Education, Inc. A buffer will release H + ions if the blood pH __________. a) rises (becomes more basic) b) falls (becomes more acidic) c) stays the same d) becomes neutral

44. © 2013 Pearson Education, Inc. The four major organic compounds that comprise our bodies are __________. a) water, salt, carbon, oxygen b) proteins, carbohydrates, lipids, nucleic acids c) amino acids, fats, sugars, DNA d) carbon, hydrogen, oxygen, nitrogen

45. © 2013 Pearson Education, Inc. The four major organic compounds that comprise our bodies are __________. a) water, salt, carbon, oxygen b) proteins, carbohydrates, lipids, nucleic acids c) amino acids, fats, sugars, DNA d) carbon, hydrogen, oxygen, nitrogen

46. © 2013 Pearson Education, Inc. The major function of carbohydrates in the body is __________. a) protein synthesis b) as cellular fuel c) being a genetic blueprint d) forming the basis of the cell membrane bilayer

47. © 2013 Pearson Education, Inc. The major function of carbohydrates in the body is __________. a) protein synthesis b) as cellular fuel c) being a genetic blueprint d) forming the basis of the cell membrane bilayer

48. © 2013 Pearson Education, Inc. Which type of reaction occurs when biological molecules are broken down? a) Hydrolysis b) Anabolic c) Dehydration synthesis d) Endergonic

49. © 2013 Pearson Education, Inc. Which type of reaction occurs when biological molecules are broken down? a) Hydrolysis b) Anabolic c) Dehydration synthesis d) Endergonic

50. © 2013 Pearson Education, Inc. The three major subclasses of lipids include phospholipids, steroids, and __________. a) fatty acids b) glycerols c) triglycerides d) oils

51. © 2013 Pearson Education, Inc. The three major subclasses of lipids include phospholipids, steroids, and __________. a) fatty acids b) glycerols c) triglycerides d) oils

52. © 2013 Pearson Education, Inc. The major building blocks for proteins are __________. a) amino acids b) monosaccharides c) triglycerides d) nucleotides

53. © 2013 Pearson Education, Inc. The major building blocks for proteins are __________. a) amino acids b) monosaccharides c) triglycerides d) nucleotides

54. © 2013 Pearson Education, Inc. Functions of proteins do not include acting as __________. a) membrane receptors b) genes c) enzymes d) muscle cell components

55. © 2013 Pearson Education, Inc. Functions of proteins do not include acting as __________. a) membrane receptors b) genes c) enzymes d) muscle cell components

56. © 2013 Pearson Education, Inc. The quaternary level of protein structure involves __________. a) individual amino acids b) aggregations of polypeptides forming a complex protein c) alpha-helices d) hydrogen bonds between adjacent amino acids

57. © 2013 Pearson Education, Inc. The quaternary level of protein structure involves __________. a) individual amino acids b) aggregations of polypeptides forming a complex protein c) alpha-helices d) hydrogen bonds between adjacent amino acids

58. © 2013 Pearson Education, Inc. An enzyme's ____________ is the molecule upon which an enzyme acts. a) active site b) substrate c) inhibitor d) catalyst

59. © 2013 Pearson Education, Inc. An enzyme's ____________ is the molecule upon which an enzyme acts. a) active site b) substrate c) inhibitor d) catalyst

60. © 2013 Pearson Education, Inc. Increasing the concentration of an enzyme's substrate (up to a point) would ___________ the reaction. a) slow down b) speed up c) inhibit d) destroy

61. © 2013 Pearson Education, Inc. Increasing the concentration of an enzyme's substrate (up to a point) would ___________ the reaction. a) slow down b) speed up c) inhibit d) destroy

62. © 2013 Pearson Education, Inc. The major building blocks of nucleic acids are __________. a) amino acids b) DNA and RNA c) nucleotides d) sugars

63. © 2013 Pearson Education, Inc. The major building blocks of nucleic acids are __________. a) amino acids b) DNA and RNA c) nucleotides d) sugars

64. © 2013 Pearson Education, Inc. The four DNA nucleotides are __________. a) carbon, hydrogen, nitrogen, oxygen b) protein, lipid, nucleic acid, carbohydrate c) primary, secondary, tertiary, quaternary d) adenine, thymine, cytosine, guanine

65. © 2013 Pearson Education, Inc. The four DNA nucleotides are __________. a) carbon, hydrogen, nitrogen, oxygen b) protein, lipid, nucleic acid, carbohydrate c) primary, secondary, tertiary, quaternary d) adenine, thymine, cytosine, guanine

66. © 2013 Pearson Education, Inc. Which of the following is not a metabolic function of ATP? a) Providing energy for anabolic reactions b) Providing energy to transport substances across membranes c) Providing energy for diffusion d) Providing energy for muscles to shorten

67. © 2013 Pearson Education, Inc. Which of the following is not a metabolic function of ATP? a) Providing energy for anabolic reactions b) Providing energy to transport substances across membranes c) Providing energy for diffusion d) Providing energy for muscles to shorten