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Chapter 4 Atoms and Elements

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1 Chapter 4 Atoms and Elements
Clicker Questions Chapter 4 Atoms and Elements Laurie LeBlanc Cuyamaca College

2 What is the charge on the electron, the proton, and the neutron, respectively?
–1,+1,+1 –1,+1,–1 –1, 0,+1 –1,+1, 0 +1,+1, 0 Answer: D

3 What is the charge on the electron, the proton, and the neutron, respectively?
–1,+1,+1 –1,+1,–1 –1, 0,+1 –1,+1, 0 +1,+1, 0 Answer: D

4 Which scientist discovered the electron?
Democritus J. J. Thomson John Dalton Lord Kelvin Ernest Rutherford Answer: B

5 Which scientist discovered the electron?
Democritus J. J. Thomson John Dalton Lord Kelvin Ernest Rutherford Answer: B

6 Which of the following subatomic particles has the least mass?
Electron Neutron Proton Two of the above All of the above Answer: A

7 Which of the following subatomic particles has the least mass?
Electron Neutron Proton Two of the above All of the above Answer: A

8 What subatomic particle(s) is/are found in the nucleus?
Electron Neutron Proton Two of the above All of the above Answer: D

9 What subatomic particle(s) is/are found in the nucleus?
Electron Neutron Proton Two of the above All of the above Answer: D

10 Which element has the chemical symbol “Pb”?
Mercury Polonium Platinum Tungsten Lead Answer: E

11 Which element has the chemical symbol “Pb”?
Mercury Polonium Platinum Tungsten Lead Answer: E

12 What is the chemical symbol for potassium?
Pt Pb K Answer: E

13 What is the chemical symbol for potassium?
Pt Pb K Answer: E

14 How many protons are in one silver atom?
47 60 94 108 154 Answer: A

15 How many protons are in one silver atom?
47 60 94 108 154 Answer: A

16 Which of the following elements is a metalloid?
Aluminum Silicon Tin Phosphorus Iodine Answer: B

17 Which of the following elements is a metalloid?
Aluminum Silicon Tin Phosphorus Iodine Answer: B

18 Which of the following elements is a metalloid?
Arsenic Bismuth Carbon Iodine Gallium Answer: A

19 Which of the following elements is a metalloid?
Arsenic Bismuth Carbon Iodine Gallium Answer: A

20 Strontium is in which of the following groups?
Halogens Noble gases Alkaline earth metals Alkali metals Transition metals Answer: C

21 Strontium is in which of the following groups?
Halogens Noble gases Alkaline earth metals Alkali metals Transition metals Answer: C

22 Chlorine is in which of the following groups?
Halogens Noble gases Alkaline earth metals Alkali metals Transition metals Answer: A

23 Chlorine is in which of the following groups?
Halogens Noble gases Alkaline earth metals Alkali metals Transition metals Answer: A

24 The sum of neutrons and protons in a given nucleus is referred to as the
proton number. mass number. atomic number. isotope number. neutron number. Answer: B

25 The sum of neutrons and protons in a given nucleus is referred to as the
proton number. mass number. atomic number. isotope number. neutron number. Answer: B

26 How many electrons are in the bromide ion?
35 36 46 70 80 Answer: B

27 How many electrons are in the bromide ion?
35 36 46 70 80 Answer: B

28 How many electrons, protons, and neutrons respectively are in the iron(III) ion, 56Fe3+?
23, 26, 30 26, 26, 30 26, 26, 56 26, 26, 26 29, 26, 30 Answer: A

29 How many electrons, protons, and neutrons respectively are in the iron(III) ion, 56Fe3+?
23, 26, 30 26, 26, 30 26, 26, 56 26, 26, 26 29, 26, 30 Answer: A

30 What is the symbol for an ion having 12 protons and 10 electrons?
Si2+ Si Mg2+ Ne Ne2– Answer: C

31 What is the symbol for an ion having 12 protons and 10 electrons?
Si2+ Si Mg2+ Ne Ne2– Answer: C

32 What is the symbol for an ion having 15 protons and 18 electrons?
Ph3– Ar P3+ Cl– P3– Answer: E

33 What is the symbol for an ion having 15 protons and 18 electrons?
Ph3– Ar P3+ Cl– P3– Answer: E

34 How many electrons are in the scandium ion, Sc3+?
45 42 48 24 18 Answer: E

35 How many electrons are in the scandium ion, Sc3+?
45 42 48 24 18 Answer: E

36 Which atom has the same number of protons as 59Ni?
59Fe 58Ni 59Co 141Pr 102Rh Answer: B

37 Which atom has the same number of protons as 59Ni?
59Fe 58Ni 59Co 141Pr 102Rh Answer: B

38 The nucleus of a fluorine-19 atom contains
19 protons and 19 electrons. 19 protons and 0 electrons. 9 protons and 10 electrons. 19 protons and 19 neutrons. 9 protons and 10 neutrons. Answer: E

39 The nucleus of a fluorine-19 atom contains
19 protons and 19 electrons. 19 protons and 0 electrons. 9 protons and 10 electrons. 19 protons and 19 neutrons. 9 protons and 10 neutrons. Answer: E

40 The atomic mass of strontium is 87. 62 amu
The atomic mass of strontium is amu. Which of the following isotopes is the most abundant? Sr-84 with a mass of amu Sr-86 with a mass of amu Sr-87 with a mass of amu Sr-88 with a mass of amu Answer: D

41 The atomic mass of strontium is 87. 62 amu
The atomic mass of strontium is amu. Which of the following isotopes is the most abundant? Sr-84 with a mass of amu Sr-86 with a mass of amu Sr-87 with a mass of amu Sr-88 with a mass of amu Answer: D

42 What is the charge on a halide ion?
1– 1+ 2– 2+ Answer: B

43 What is the charge on a halide ion?
1– 1+ 2– 2+ Answer: B

44 Which of the following species has 10 electrons and 14 neutrons?
27Al3+ 27Al 14N3– 24Mg2+ 20Ne Answer: A

45 Which of the following species has 10 electrons and 14 neutrons?
27Al3+ 27Al 14N3– 24Mg2+ 20Ne Answer: A

46 What is the charge on an oxygen atom?
1– 1+ 2– 2+ Answer: D

47 What is the charge on an oxygen atom?
1– 1+ 2– 2+ Answer: D

48 the same number of protons, but different numbers of neutrons.
Isotopes have the same number of protons, but different numbers of neutrons. the same number of protons and neutrons. the same chemical symbol. the same number of electrons and neutrons. Two of the above Answer: E

49 the same number of protons, but different numbers of neutrons.
Isotopes have the same number of protons, but different numbers of neutrons. the same number of protons and neutrons. the same chemical symbol. the same number of electrons and neutrons. Two of the above Answer: E

50 Which of the following elements has the most similar reaction with water as potassium?
Ca Ar Fe Na C Answer: D

51 Which of the following elements has the most similar reaction with water as potassium?
Ca Ar Fe Na C Answer: D

52 Carbon has three naturally occurring isotopes: C-12 with a mass of 12
Carbon has three naturally occurring isotopes: C-12 with a mass of amu and natural abundance of 98.89%, C-13 with a mass of amu and natural abundance of 1.110%. Calculate the atomic mass of carbon. (The abundance of C-14 is negligibly small.) 12.00 amu 12.01 amu 13.00 amu 14.00 amu 25.00 amu Answer: B

53 Carbon has three naturally occurring isotopes: C-12 with a mass of 12
Carbon has three naturally occurring isotopes: C-12 with a mass of amu and natural abundance of 98.89%, C-13 with a mass of amu and natural abundance of 1.110%. Calculate the atomic mass of carbon. (The abundance of C-14 is negligibly small.) 12.00 amu 12.01 amu 13.00 amu 14.00 amu 25.00 amu Answer: B

54 A hypothetical element, Hy, has 3 isotopes, Hy-299, Hy-300, and Hy-301, which have the following natural abundance respectively: 5.00%, 65.00%, and 30.00%. The atomic masses of the isotopes are amu, amu, and amu, respectively. Calculate the atomic mass of Hy. 299.5 amu 299.8 amu 300.3 amu 300.6 amu 301.1 amu Answer: C

55 A hypothetical element, Hy, has 3 isotopes, Hy-299, Hy-300, and Hy-301, which have the following natural abundance respectively: 5.00%, 65.00%, and 30.00%. The atomic masses of the isotopes are amu, amu, and amu, respectively. Calculate the atomic mass of Hy. 299.5 amu 299.8 amu 300.3 amu 300.6 amu 301.1 amu Answer: C

56 Which of the following is characteristic of metals?
Solid at room temperature Malleable Ductile Located toward the left side of the periodic table All of the above Answer: E

57 Which of the following is characteristic of metals?
Solid at room temperature Malleable Ductile Located toward the left side of the periodic table All of the above Answer: E

58 Which scientist discovered the nucleus?
Robert Millikan J. J. Thomson John Dalton Lord Kelvin Ernest Rutherford Answer: E

59 Which scientist discovered the nucleus?
Robert Millikan J. J. Thomson John Dalton Lord Kelvin Ernest Rutherford Answer: E

60 Who first theorized that matter was composed of atoms?
J. J. Thomson Leucippus and Democritus John Dalton Aristotle Ernest Rutherford Answer: B

61 Who first theorized that matter was composed of atoms?
J. J. Thomson Leucippus and Democritus John Dalton Aristotle Ernest Rutherford Answer: B

62 Which of the following is NOT a part of Dalton’s atomic theory?
Each element is composed of small indestructible particles called “atoms.” Atoms of a given element are identical to each other. Matter is neither created nor destroyed. Atoms combine in simple, whole-number ratios to form compounds. All of the above are part of the atomic theory. Answer: C

63 Which of the following is NOT a part of Dalton’s atomic theory?
Each element is composed of small indestructible particles called “atoms.” Atoms of a given element are identical to each other. Matter is neither created nor destroyed. Atoms combine in simple, whole-number ratios to form compounds. All of the above are part of the atomic theory. Answer: C

64 Rubidium has two isotopes: Rb-85 with a mass of 84
Rubidium has two isotopes: Rb-85 with a mass of amu and natural abundance of 72.17%, and Rb-87. If the atomic mass of rubidium is amu, what is the mass of the second isotope, Rb-87? 89.26 amu 86.92 amu 33.52 amu 86.29 amu 87.00 amu Answer: B

65 Rubidium has two isotopes: Rb-85 with a mass of 84
Rubidium has two isotopes: Rb-85 with a mass of amu and natural abundance of 72.17%, and Rb-87. If the atomic mass of rubidium is amu, what is the mass of the second isotope, Rb-87? 89.26 amu 86.92 amu 33.52 amu 86.29 amu 87.00 amu Answer: B

66 Which of the following pairs of ions have the same number of electrons?
Al3+ and Ga3+ Fe2+ and Fe3+ S2– and P3– Li+ and Cl– Cl– and Br– Answer: C

67 Which of the following pairs of ions have the same number of electrons?
Al3+ and Ga3+ Fe2+ and Fe3+ S2– and P3– Li+ and Cl– Cl– and Br– Answer: C

68 Which of the following elements is expected to have similar properties to magnesium?
Rubidium Beryllium Nitrogen Sulfur Cesium Answer: B

69 Which of the following elements is expected to have similar properties to magnesium?
Rubidium Beryllium Nitrogen Sulfur Cesium Answer: B

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