Test Bank For Chemistry & Chemical Reactivity 9th Edition by John C. Kotz

Chapter 02 - Atoms, Molecules, and Ions 1. Which of the following statements concerning atomic structure is/are correct? 1. Neutrons and electrons are found in space as a cloud around the nucleus. 2. The nucleus contains all the positive charge of an atom. 3. Electrons surround the nucleus and account for the majority of an atom's volume. a. 1only ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 2only c. 3only d. 2and3 d 1 False 2.1 Atomic Structure--Protons, Electrons, and Neutrons JFND-GO4R-EC3D-GPTZ e. 1,2,and3 2. Atoms consist of three fundamental particles. What are these particles and their charges? a. proton (+1), neutron (neutral) and electron (−1) b. proton (−1), neutron (+1) and electron (neutral) c. proton (+1), neutron (−1) and electron (neutral) d. proton (neutral), neutron (+1) and electron (−1) e. proton (−1), neutron (neutral) and electron (+1) ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: a 1 False 2.1 Atomic Structure--Protons, Electrons, and Neutrons 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GPTS 3. Rank the subatomic particles from least to greatest mass. a. electron mass = proton mass = neutron mass b. electron mass = neutron mass proton mass c. electron mass = proton mass neutron mass d. electron mass proton mass neutron mass e. electron mass proton mass = neutron mass ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: d 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GPTI 4. Atomic number is the________ in the nucleus of an atom. a. b. c. d. e. ANSWER: POINTS: number of electrons number of protons number of protons minus the number of neutrons sum of the number of electrons and neutrons sum of the number of neutrons and protons b 1 Cengage Learning Testing, Powered by Cognero Page 1 Chapter 02 - Atoms, Molecules, and Ions HAS VARIABLES: TOPICS: QUESTION ID: 5. The atomic number of fluorine is ____. False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GPTW a. 7A ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 9 c. 10 d. 19 e. 0 b 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP4N 6. Which of the following statements is/are CORRECT? 1. A hydrogen atom with 1 proton and zero neutrons is assigned a mass of exactly 1 atoms mass unit. 28 3. A carbon atom with 6 protons and 6 neutrons is assigned a mass of exactly 12 atomic mass units. 2. 1 atomic mass unit is equivalent to 9.11 × 10− a. 1only ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 2only g. c. 3only d. 1and2 c 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP4B e. 1,2,and3 e. 39.95 7. What is the mass number of an argon atom with 22 neutrons? a. 2 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 18 c. 22 d. 40 8. A neutral a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: e 1 True 2.2 Atomic Number and Atomic Mass Dynamic Question JFND-GO4R-EC3D-GP3A atom of the isotope 200Hg contains 200 neutrons and 280 electrons. 80 protons and 200 neutrons. 200 protons and 120 electrons. 200 protons, 80 neutrons, and 200 electrons. 80 protons and 120 neutrons. 9. How many protons are there in an atom of vanadium-51? Cengage Learning Testing, Powered by Cognero Page 2 d 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP33 Chapter 02 - Atoms, Molecules, and Ions a. 29 ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. 74 c. 22 d. 23 e. 28 10. How many protons, neutrons, and electrons are in a neutral atom of 56Fe? a. 26 protons, 30 neutrons, 56 electrons ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: c 1 True 2.2 Atomic Number and Atomic Dynamic Question JFND-GO4R-EC3D-GP4F Mass b. 26 protons, 30 neutrons, 30 electrons c. 26 protons, 30 neutrons, 26 electrons d. 56 protons, 26 neutrons, 56 electrons e. 56 protons, 26 neutrons, 26 electrons 11. What is the mass of chlorine-35 relative to carbon-12? a. 0.657 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 0.522 c. 1.52 d 1 False 2.2 Atomic Number and Atomic JFND-GO4R-EC3D-GP4R d. 2.92 e. 23 e. 232Pa e. 12. Which of the following atoms contains the fewest protons? Mass d. 238U Mass Mass a. 232Th ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 231Pa c. 245Pu a 1 False 2.2 Atomic Number and Atomic JFND-GO4R-EC3D-GP4D 13. Which of the following atoms contains more protons than neutrons? a. b. c. d. d 1 True 2.2 Atomic Number and Atomic Mass Dynamic Question JFND-GO4R-EC3D-GP4G ANSWER: POINTS: HAS VARIABLES: TOPICS: a 1 False 2.2 Atomic Number and Atomic Cengage Learning Testing, Powered by Cognero Page 3 Chapter 02 - Atoms, Molecules, and Ions QUESTION ID: JFND-GO4R-EC3D-GP3U 14. What is the atomic symbol for an element with 15 protons and 16 neutrons? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: 15. What is the identity of a. Ni ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: c 1 True 2.2 Atomic Number and Atomic Mass Dynamic Question JFND-GO4R-EC3D-GP31 ? b. Zn c. Rn d. Ce e. Pd e. Cs d. 59 a 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP3T 16. What is the atomic symbol for an element that has 30 neutrons and a mass number of 55? a. At ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Zn c. Co d. Mn d 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP3O 17. How many neutrons are there in an atom of cobalt-59 ? e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: 32 a. 27 b. 2 c. 86 e 1 True 2.2 Atomic Number and Atomic Mass Dynamic Question JFND-GO4R-EC3D-GP3Z 18. Which of the following atoms contains the largest number of neutrons? a. b. c. d. e. ANSWER: e POINTS: 1 Cengage Learning Testing, Powered by Cognero Page 4 Chapter 02 - Atoms, Molecules, and Ions HAS VARIABLES: TOPICS: QUESTION ID: False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP3S 19. An atom that has the same number of neutrons as is a. b. c. d. .... e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 20. Two isotopes of a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: . a given b 1 False 2.2 Atomic Number and Atomic Mass JFND-GO4R-EC3D-GP3I element will have the same number of ____, but a different number of ____ in their nucleus. protons, electrons electrons, protons protons, neutrons ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: c 1 False 2.3 Isotopes JFND-GO4R-EC3D-GPNN neutrons, protons electrons, neutrons 21. If two different isotopes a. they have the same atomic mass. b. they have the same mass number. c. they have the same number of protons. d. they have the same number of electrons. e. they have the same number of neutrons. 22. Which of the following atomic symbols represents an isotope of ? a. b. c. d. e. ANSWER: d Cengage Learning Testing, Powered by Cognero Page 5 c 1 False 2.3 Isotopes JFND-GO4R-EC3D-GP3W have the same atomic number, it must mean that Chapter 02 - Atoms, Molecules, and Ions POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: 1 True 2.3 Isotopes Dynamic Question JFND-GO4R-EC3D-GPNB 23. Which of the following statements is true concerning and ? a. They have the same number of neutrons. b. They are isotopes. c. They have the same relative atomic mass. d. They have the same mass number. e. They have different chemical properties. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b 1 True 2.3 Isotopes Dynamic Question JFND-GO4R-EC3D-GPB3 24. The masses of isotopes and their abundances are determined experimentally using a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: a mass spectrometer. an analytical balance. a centrifuge. filtration followed by distillation. electrolysis. a 1 False 2.3 Isotopes JFND-GO4R-EC3D-GPBA 25. A sample of an element consists of two isotopes. The percent abundance of one of the isotopes is 43.0%. What is the percent abundance a. 14.5 ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: of the other isotope? b. 21.5 c. 28.5 d. 43.0 e. 57.0 e 1 True 2.3 Isotopes Dynamic Question JFND-GO4R-EC3D-GPNG 26. The mass spectrum of an element with two naturally occurring isotopes is shown below. What is the best estimate of the element’s (average) atomic weight? Cengage Learning Testing, Powered by Cognero Page 6 Chapter 02 - Atoms, Molecules, and Ions a. 10amu ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 11amu c. 10.8amu c d. 10.2amu e. 10.5amu 27. Lithium has two naturally occurring isotopes, following statements concerning the relative abundance of each isotope is correct? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: c 1 True 2.4 Atomic Weight OWL JFND-GO4R-EC3D-GPND 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPNF 67 Li and Li . The atomic weight of lithium is 6.941. Which of the The abundance of 7Li is greater than 6Li. The abundance of 7Li is less than 6Li. The abundance of 6Li is equal to the abundance of 7Li. Not enough data is provided to determine the correct answer. Based on the atomic mass, only 7Li occurs naturally. a 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPNR 28. The element indium has two stable isotopes, indium-113 with an atomic mass of 112.9 u and indium-115 with an atomic mass of 114.9 u. From the atomic weight found on the periodic table, one can conclude that: a. both isotopes have the same percent natural abundance b. there is an isotope of nitrogen with an atomic mass of 114.8 u c. indium-115 has the highest percent natural abundance d. indium-113 has the highest percent natural abundance 29. Rubidium has two naturally occurring isotopes. The atomic weight of Rb is 85.4678 u. If 72.15% of Rb is found as Rb-85 (84.9117 u), what is the mass of the other isotope? Cengage Learning Testing, Powered by Cognero Page 7 Chapter 02 - Atoms, Molecules, and Ions a. 0.56u ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 85.68u c. 86.91u d. 86.02u e. 83.47u a. 29.64u b. 28.36u c. 29.04u b 1 True 2.4 Atomic Weight Dynamic Question JFND-GO4R-EC3D-GPBT d. 29.60u e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: a. 13.95u ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. 14.00u c. 14.01u d. 14.50u e. 19.50u 27.38 u c 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPBU 30. An element consists of three isotopes. The abundance of one isotope is 92.21% and its atomic mass is 27.97693 u. The abundance of the second isotope is 4.70% and its atomic mass is 28.97649 u. The atomic mass of the third isotope is 29.97376 u. What is the atomic weight of the element? a. 28.09u ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 28.98u c. 28.96u d. 29.87u e. 29.07u a 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPB1 31. Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u, 77.11% abundance), X-29 (28.976 u, 8.00% abundance), and X-30 (29.974 u, 14.89% abundance). Calculate the atomic weight of X. 32. A certain element consists of two stable isotopes. The first has a mass of 14.0031 amu and a percent natural abundance of 99.63%. The second has a mass of 15.001 amu and a percent natural abundance of 0.37%. What is the atomic weight of the element? c 1 False 2.4 Atomic Weight Dynamic Question | OWL JFND-GO4R-EC3D-GPBO 33. Copper has an atomic weight of 63.55 u. If 69.17% of Cu exists as Cu-63 (62.93960 u), what is the identity and the atomic mass of the other isotope? a. Cu-64; 63.82 u b. Cu-64; 64.16 u c. Cu-65; 64.16 u d. Cu-65; 64.92 u Cengage Learning Testing, Powered by Cognero Page 8 Chapter 02 - Atoms, Molecules, and Ions ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: d 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPBZ 35. The elements a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: e. Cu-66; 65.91 u 34. Silver has two stable isotopes with masses of 106.90509 u and 108.9047 u. The atomic weight of silver is 107.868 u. What is the percent abundance of each isotope? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 50.0% Ag-107 and 50.0% Ag-109 51.8% Ag-107 and 48.2% Ag-109 55.4% Ag-107 and 44.6% Ag-109 48.2% Ag-107 and 51.8% Ag-109 44.6% Ag-107 and 55.4% Ag-109 b 1 False 2.4 Atomic Weight JFND-GO4R-EC3D-GPBS adjacent to the line separating the metals and nonmetals are known as the metalloids or semimetals. noble gases. alkaline earth metals. transition metals. alkali metals. 36. Which of the following statements is/are CORRECT? 1. The group 3A elements are also known as the chalcogens. 2. The noble gases are sometimes called the rare gases because of their low abundances. 3. The halogens, or group 7A elements, all exist as diatomic molecules. a. 1only ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 2only c. 3only d. 2and3 d 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-GPBW e. 1,2,and3 37. What element is in the fourth period in Group 3A? Cengage Learning Testing, Powered by Cognero Page 9 a 1 True 2.5 The Periodic Table Dynamic Question JFND-GO4R-EC3D-GPBI Chapter 02 - Atoms, Molecules, and Ions a. Sb ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Ga c. In b 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-GPKN d. Si e. Tl 38. What halogen is in the third period? a. S ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Cl2 c. I2 d. H2 e. Ar 39. Which a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: of the following statements is not true about the element zinc? It is a metal. It is a transition element. It is in period 4. It has chemical and physical properties most similar to technitium. It is in group 2B. 40. In which group of the following groups of the periodic table are all the elements nonmetals? a. 2A ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 3A c. 5A d. 6A e. 7A e. neon 41. Which element belongs to the alkaline earth metals? a. magnesium ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. potassium c. selenium a 1 True 2.5 The Periodic Table Dynamic Question JFND-GO4R-EC3D-GPKG d. chlorine Cengage Learning Testing, Powered by Cognero Page 10 b 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-GPKB d 1 True 2.5 The Periodic Table Dynamic Question JFND-GO4R-EC3D-GPJ3 e 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-GPJA Chapter 02 - Atoms, Molecules, and Ions 42. What is the name of the halogen in period 4? a. iodine ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. bromine c. calcium d. argon e. cesium 44. Which of the following elements is not a metalloid? a. boron ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. selenium c. germanium b 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-GPKD d. arsenic e. silicon 45. The formula of acetic acid, CH3CO2H, is an example of a(n) a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: condensed formula. empirical formula. structural formula. ionic compound formula. mass spectrum. Cengage Learning Testing, Powered by Cognero Page 11 b 1 True 2.5 The Periodic Table Dynamic Question | OWL JFND-GO4R-EC3D-GPKF 43. What is the common name of the group that has as one of its members the element which contains 24 protons in its nucleus? a. halogens b. noble gases c. alkali metals d. transition metals e. alkaline earth metals ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: d 1 True 2.5 The Periodic Table Dynamic Question | OWL JFND-GO4R-EC3D-GPKR a 1 False 2.6 Molecules, Compounds, and Formulas JFND-GO4R-EC3D-GPJU Chapter 02 - Atoms, Molecules, and Ions 46. C2H2F4 is the formula for two possible molecules. C2H2F4 is an example of a(n) a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 47. Which element is most ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: structural formula. empirical formula. condensed formula. space-filling model. molecular formula. e 1 False 2.6 Molecules, Compounds, and Formulas JFND-GO4R-EC3D-GPJ1 likely to form a 2– ion? a. K b. Mg c. P d. Br e. S e 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-GPJT 48. Which atom is most likely to form a 2+ ion? a. scandium ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. calcium c. aluminum d. oxygen e. fluorine b 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-GPJO 49. Identify the ions present in Na2SO4. ANSWER: c a. b. c. d. e. +22 Na , S −, and O − +22 Na , S +, and O − Cengage Learning Testing, Powered by Cognero Page 12 Na+ and SO42− +22 Na , S −, and O + Na+ and SO4− Chapter 02 - Atoms, Molecules, and Ions POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-GPJZ 50. Identify the ions in CaHPO4. Ca2+ and PO43– Ca2+ and HPO42– Ca+ and HPO – Ca3+ and HPO43– 2+ + 3– 2– Ca ,H,P ,andO b 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-GPJS a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 4 51. What charge is likely on a monatomic silver cation? a. b. c. d. e. c 1 False 2.7 Ionic JFND-GO4R-EC3D-GPJI 2– 1– 1+ 2+ 3+ ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: Compounds: Formulas, Names, and Properties 52. For a nonmetal in Group 6A of the periodic table, the most common monatomic ion will have a charge of ____. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: Compounds: Formulas, Names, and Properties a. b. c. d. e. b 1 False 2.7 Ionic JFND-GO4R-EC3D-GPJW 3– 2– 1– 1+ 2+ 53. Indium(III) monohydrogen phosphate is an ionic compound formed from In represent the formula? Cengage Learning Testing, Powered by Cognero 3+ and HPO4 2- . What is the correct way to Page 13 Chapter 02 - Atoms, Molecules, and Ions + - 3+2- a. InHPO4 b. In(HPO4)2 c. In HPO4 d. In2(HPO4)3 e. In3(HPO4)5 ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: d 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question JFND-GO4R-EC3D-EOKN 54. Which of the following formulas is not correct? a. AlPO4 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. KClO4 c. CaS d. Na(NO3)2 d 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOKB e. Na2HPO4 55. What is the correct formula for an ionic compound that contains barium ions and carbonate ions? a. BaCO3 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Ba(HCO3)2 c. Ba2CO3 d. Ba2C e. Ba(CO3)2 a 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJ3 56. Sodium sulfate has the chemical formula Na2SO4. Based on this information, the formula for chromium(III) sulfate is ____. a. CrSO4 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Cr(SO4)3 c. Cr2(SO4)3 d. Cr2SO4 c 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJA e. Cr3(SO4)2 e. 3+ 57. What is the charge on the copper ion in K3P? a. 3– ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. 1– c. 0 d. 1+ d 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question JFND-GO4R-EC3D-EOKG Cengage Learning Testing, Powered by Cognero Page 14 Chapter 02 - Atoms, Molecules, and Ions 58. What is the correct formula for calcium nitrate? a. CaN ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Ca3N2 c. CaNO2 d. Ca3(NO3)2 e 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOKF e. Ca(NO3)2 e. KH2P e. AlF2. 59. What is the correct formula for potassium dihydrogen phosphate? a. KH2PO4 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. K2HPO4 c. K2H2PO4 d. K3H2PO4 a 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOKR 60. The formula for aluminum fluoride is a. AlF3. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. AlF. c. Al2F. d. AlF4. a 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question JFND-GO4R-EC3D-EOKD 61. What is the correct formula for cobalt(III) bromide? a. CoBr ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. CoBr3 c. Co2Br3 d. Co3Br2 b 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJU e. Co3Br d. Ga2(O2)3 62. What is the correct formula for gallium(III) peroxide? a. GaO2 b. Ga2O2 c. Ga3(O2)2 e. Ga(O2)2 ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: d 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question JFND-GO4R-EC3D-EOJ1 Cengage Learning Testing, Powered by Cognero Page 15 Chapter 02 - Atoms, Molecules, and Ions 63. The correct name for Sr2+ is a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: monostrontium ion. strontium ion. strontium(II) ion. strontium(I) ion. strontium. b 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question JFND-GO4R-EC3D-EOJT 64. What is the symbol for an ion of an element which has 56 protons and 54 electrons. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: a 1 True 2.7 Ionic Compounds: Formulas, Names, and Properties Dynamic Question | OWL JFND-GO4R-EC3D-EOJO a. Ba2+ b. Ba2- c. Xe2+ d. Xe2- e. Ds2+ 65. What is the correct name for NH4NO3? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: ammonia hydrogen nitrate ammonia hydrogen nitride ammonium nitric acid ammonium nitrate ammonium nitride d 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJZ 66. What is the formula for the compound which forms between the ammonium and bromide ions? a. NH3Br ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: b. NH4Br c. NH3Br2 d. NH4Br2 b 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties OWL JFND-GO4R-EC3D-EOJS e. (NH4)2Br Cengage Learning Testing, Powered by Cognero Page 16 Chapter 02 - Atoms, Molecules, and Ions 67. What is the correct name for SrCl2? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: strontium dichloride strontium dichlorine strontium(II) dichloride strontium chloride iodine strontide d 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJI 68. What is the correct name for Ca(CH3CO2)2? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: calcium(II) carbonate calcium carbonate calcium acetate acetic calcide calcium carbonide c 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EOJW 69. Which of the following statements concerning ionic compounds is/are correct? 1. As ion charges increase, the attraction between oppositely charged ions increases. 2. Although not electrically conductive like metals, ionic compounds are malleable. 3. Positive and negative ions are attracted to each other by electrostatic forces. a. 1only ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 2only c. 3only d. 1and3 d 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EO1N e. 1,2,and3 e. CsCl 70. Predict which ionic compound has the highest melting point. a. KBr ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. MgO c. RbI d. CaBr2 b 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EO1B Cengage Learning Testing, Powered by Cognero Page 17 Chapter 02 - Atoms, Molecules, and Ions 71. What is the correct name for SCl2? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: sulfur dichloride. monosulfur chloride. sulfide dichloride. sulfur dichlorine. monosulfur dichlorine. a 1 True 2.8 Molecular Compounds: Formulas and Names Dynamic Question JFND-GO4R-EC3D-EOT3 72. What is the correct name for CCl4? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 73. What is the common a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: carbon chlorine tetracarbon chloride carbon tetrachloride carbon(IV) chloride tetrachlorocarbide c 1 False 2.8 Molecular Compounds: Formulas and Names JFND-GO4R-EC3D-EOTA name for PH3? laughing gas hydrazine nitroglycerin ammonia phosphine e 1 False 2.8 Molecular Compounds: Formulas and Names JFND-GO4R-EC3D-EO1G 74. You have 2.50 g of each of the following elements: Ca, Cu, Cs, C, and Cr. Which sample contains the largest number of atoms? a. Ca b. Cu c. Cs d. C e. Cr Cengage Learning Testing, Powered by Cognero Page 18 Chapter 02 - Atoms, Molecules, and Ions ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 75. What is the molecular mass of a. b. c. d. e. d 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EO1F cyclobutane, C4H8? 13.02 g/mol 392.42 g/mol 49.05 g/mol 56.11 g/mol 20.07 g/mol d 1 True 2.9 Atoms, Molecules, and the Mole Dynamic Question JFND-GO4R-EC3D-EO1R ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: 76. Calculate the number of moles in 0.48 g Cu. a. 0.033 mol b. 0.48 mol c. 31 mol ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 1.3 × 102 mol d 77. What is the mass of 0.71 mol Na? ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: c 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOTU Cengage Learning Testing, Powered by Cognero Page 19 d. e. 7.6 × 10− 3 mol a. –24 1.2 × 10 g b. 12 g c. 16 g d. 0.031 g e. 32 g 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EO1D Chapter 02 - Atoms, Molecules, and Ions 78. A 0.0050 g sample of boron contains ____ B atoms. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: g e Cengage Learning Testing, Powered by Cognero Page 20 a. b. c. d. e. –25 8.51 × 10 g –24 3.24 × 10 g –22 1.67 × 10 g –22 3.24 × 10 g –20 3.24 × 10 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOTT a. b. c. d. e. –4 4.6 × 10 –28 7.7 × 10 2.8 × 1020 3.1 × 1021 3.3 × 1022 c 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOT1 79. The molar mass of platinum is 195.08 g/mol. What is the mass of 1.00 × 102 Pt atoms? 80. A 0.383 g sample of an element contains 1.943 × 1021 a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: 81. What mass of Al contains the same number of atoms as 3.0 g Pb? a. b. c. 23 g 0.014 g 3.0 g atoms. What is the element symbol? Sn Rh Cs Ag Pd a 1 True 2.9 Atoms, Molecules, and the Mole Dynamic Question JFND-GO4F-GBYU-RPTS Chapter 02 - Atoms, Molecules, and Ions ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: d. e. 0.39 g 0.11 g d 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOTZ 2 82. A nail is coated with a 0.053 cm thick layer of zinc. The surface area of the nail is 8.59 cm . The density of zinc is 3 7.13 g/cm . How many zinc atoms are used in the coating? 5.9 × 1020 atoms 3.0 × 1022 atoms 3.8 × 1022 atoms 2.0 × 1024 atoms 1.3 × 1026 atoms b 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOTS a. b. c. d. e. 83. What is the molar mass of calcium chloride hexahydrate? a. 75.53 g/mol ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 111.0 g/mol c. 117.0 g/mol d. 183.6 g/mol e. 219.1 g/mol e 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EOTI 84. What is the molar mass of sodium sulfate? ANSWER: POINTS: HAS VARIABLES: Cengage Learning Testing, Powered by Cognero Page 21 a. b. c. d. e. 55.06 g/mol 119.1 g/mol 78.05 g/mol 142.0 g/mol 110.0 g/mol d 1 False Chapter 02 - Atoms, Molecules, and Ions TOPICS: 2.9 Atoms, Molecules, and the Mole QUESTION ID: JFND-GO4R-EC3D-EOTW 85. Calculate the number of moles of aluminum oxide in 6.83 g Al2O3. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 86. What is the mass ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 87. What is the mass ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: a. b. –4 2.51 × 10 g –4 5.03 × 10 g a. b. c. d. e. –2 6.70 × 10 mol 6.96 × 102 mol 0.253 mol 0.127 mol –3 1.56 × 10 mol a 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQNN of 8.04 × 10–3 mol O2? c. 0.129 g d. 3.89 g e. 0.257 g of 0.50 mol chromium(III) sulfide? a. b. c. d. e. –3 2.5×10 g –3 5.9×10 g 42 g 1.0 × 102 g 110 g d 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQB3 88. How many hydrogen atoms are present in 1.0 g of NH3? a. 0.059 atoms b. 0.18 atoms Cengage Learning Testing, Powered by Cognero Page 22 e 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQNB Chapter 02 - Atoms, Molecules, and Ions 3.5 × 1022 atoms 1.1 × 1023 atoms 1.2 × 1022 atoms d 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQBA ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: c. d. e. 89. How many bromide ions are in 0.55 g of iron(III) bromide? 1.1 × 1021 ions 3.4 × 1021 ions 3.3 × 1023 ions 9.9 × 1023 ions 2.9 × 1026 ions b 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQNG a. b. c. d. e. 90. If 1.00 g of an unknown molecular compound contains 8.35 × 1021 molecules, what is its molar mass? a. 44.0 g/mol ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 91. What is the mass percent of chlorine in a. ANSWER: POINTS: HAS VARIABLES: Cengage Learning Testing, Powered by Cognero Page 23 b. 66.4 g/mol c. 72.1 g/mol d. 98.1 g/mol e. 132 g/mol b. c. d. e. c 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQNF magnesium chloride? 25.53% 37.24% 40.67% 59.33% 74.47% e 1 False Chapter 02 - Atoms, Molecules, and Ions TOPICS: 2.10 Describing Compound Formulas QUESTION ID: JFND-GO4R-EC3D-EQNR 92. What is the mass percent of each element in sulfuric acid, H2SO4? a. b. c. d. e. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 2.055% H, 32.69% S, 65.25% O 1.028% H, 32.69% S, 66.28% O 28.57% H, 14.29% S, 57.17% O 1.028% H, 33.72% S, 65.25% O 2.016% H, 32.07% S, 65.91% O a 1 False 2.10 Describing Compound Formulas JFND-GO4R-EC3D-EQND 93. What is the empirical formula of an oxide of nitrogen that contains 63.64 % nitrogen by mass? ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: e 1 True 2.10 Describing Compound Formulas Dynamic Question JFND-GO4R-EC3D-EQBU a. N2O3 b. N c. N2O5 d. N2 e. N2O 94. A molecule is found to contain 47.35% by mass C, 10.60% by mass H, and 42.05% by mass O. What is the empirical formula for this molecule? a. C2H6O ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. C3H4O c. C3H8O2 d. C4H6O2 e. C4H8O3 c 1 False 2.10 Describing Compound Formulas JFND-GO4R-EC3D-EQB1 95. An ionic compound has the formula MCl2. The mass of 0.3011 mol of the compound is 62.69 grams. What is the identity of the metal? a. Ni ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. Cu c. Sn d. Hg e. Ba e 1 False 2.10 Describing Compound Formulas JFND-GO4R-EC3D-EQBT 96. The fully hydrated form of sodium sulfate is the decahydrate, Na2SO4⋅10H2O. This compound dehydrates (loses some Cengage Learning Testing, Powered by Cognero Page 24 Chapter 02 - Atoms, Molecules, and Ions waters of hydration) when heated. A sample of partially dehydrated sodium sulfate was found to have a molar mass of 232 g/mol. How many water molecules are found per formula unit in in this sample? (i.e. determine n in Na2SO4⋅nH2O). ANSWER: POINTS: HAS VARIABLES: TOPICS: NOTES: QUESTION ID: a 1 True 2.11 Hydrated Salts Dynamic Question JFND-GO4R-EC3D-EQBO ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 100. Pure oxygen can exist as O2 or O3. Elements ANSWER: POINTS: HAS VARIABLES: TOPICS: isotopes 1 False 2.3 Isotopes JFND-GO4R-EC3D-EQBI that exist in more than one distinct form are called ________. allotropes 1 False 2.5 The Periodic Table Cengage Learning Testing, Powered by Cognero Page 25 a. 5 waters. b. 6 waters. c. 2 waters. d. 8 waters. e. 3 waters. 97. A 3.592 g sample of hydrated magnesium bromide, MgBr2⋅xH2O, is dried in an oven. When the anhydrous salt is removed from the oven, its mass is 2.263 g. What is the value of x? a. 1 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 3 c. 6 d. 8 e. 12 c 1 False 2.11 Hydrated Salts JFND-GO4R-EC3D-EQBZ 98. A 2.000 g sample of MgCl2⋅xH2O is dried in an oven. When the anhydrous salt is removed from the oven, its mass is 0.9366 g. What is the value of x? a. 1 ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: b. 3 c. 6 d. 8 e. 12 c 1 False 2.11 Hydrated Salts JFND-GO4R-EC3D-EQBS 99. Elements that have the same number of protons, but differ in their number of neutrons are called ________. Chapter 02 - Atoms, Molecules, and Ions QUESTION ID: JFND-GO4R-EC3D-EQBW 101. Oxygen and ________ are the two most abundant elements in the Earth’s crust. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: 102. What are the names of four metalloids? silicon 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-EQKN ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: boron, silicon, germanium, arsenic, (antimony, and tellurium) 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-EQKB 103. In reactions, metals generally lose electrons to become ________, and nonmetals gain electrons to become anions. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: cations 1 False 2.7 Ionic Compounds: Formulas, Names, and Properties JFND-GO4R-EC3D-EQJ3 104. In which ionic compound, NaBr or KBr, is the force of attraction between anions and cations stronger? ANSWER: The force of attraction is stronger for NaBr. The electrostatic attraction between anions and cations decreases as the separation of the ions increases. The potassium ion will be farther from the bromide ion than the sodium ion due to its larger ionic radius. POINTS: 1 HAS VARIABLEFalse S: TOPICS: 2.7 Ionic Compounds: Formulas, Names, and Properties QUESTION ID: JFND-GO4R-EC3D-EQJA 23 What is the mass and the identity of the element used to define one mole? 105. The numerical quantity of a mole, 6.022 × 10 , is defined as the number of atoms in a specific mass of an element. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: A mole is equal to the number of atoms in 12.00 grams of carbon-12. 1 False 2.9 Atoms, Molecules, and the Mole JFND-GO4R-EC3D-EQKG 106. The building blocks of atoms (neutrons, protons, and electrons) are called ________ particles. ANSWER: POINTS: HAS VARIABLES: subatomic 1 False Cengage Learning Testing, Powered by Cognero Page 26 Chapter 02 - Atoms, Molecules, and Ions TOPICS: 2.1 Atomic Structure--Protons, Electrons, and Neutrons 2.2 Atomic Number and Atomic Mass QUESTION ID: JFND-GO4R-EC3D-EQKF 107. William Crookes was this first to observe particles produced from a cathode ray tube. These particles eventually became known as ________. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: electrons 1 False 2.5 The Periodic Table JFND-GO4R-EC3D-EQKR 108. Millikan’s oil drop experiment determined the charge of the ________. ANSWER: POINTS: HAS VARIABLES: TOPICS: QUESTION ID: electron 1 False