(Test Bank) Chemical Principles

Zumdahl,Decoste, 8

Chemistry

Test Bank

8th Edition

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Test Bank for Chemical Principles, The downloadable file consists of 740 pages, and the total size of the file is 6.49 MB. Purchase now only for highly discounted price.

Author(s): Zumdahl, Decoste

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Chapter 01 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 1 1. According to the law of definite proportions, a. the ratio of the masses of the elements in a compound is always the same. b. it is not possible for the same two elements to form more than one compound. c. if the same two elements form two different compounds, they do so in the same ratio. d. the total mass after a chemical change is the same as before the change. ANSWER: a POINTS: 1 DIFFICULTY: easy TOPICS: 2.2 KEYWORDS: compound | general chemistry | general concepts | matter 2. Which of the following pairs of compounds can be used to illustrate the law of multiple proportions? a. CaO and CaCl2 b. NO and NO2 c. H2S and HBr d. SiH4 and SiO2 e. NF3 and NCl3 ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.2 KEYWORDS: compound | general chemistry | general concepts | matter 3. How many of the following did Dalton not discuss in his atomic theory? I. isotopes II. ions III. protons IV. neutrons V. electrons a. 2 b. 5 c. 4 d. 1 e. 3 ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.3 KEYWORDS: atomic theory of matter | Dalton's atomic theory | early atomic theory | general chemistry 4. When 2.0 L of oxygen gas (O2) reacts with 1.0 L of nitrogen gas (N2), 2.0 L of gaseous product is formed. Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 2 All volumes of gases are measured at the same temperature and pressure. What is the formula of the product? a. NO b. NO4 c. N2O3 d. N2O e. NO2 ANSWER: e POINTS: 1 DIFFICULTY: easy TOPICS: 2.4 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | molecular substance 5. Which one of the following statements about atomic structure is false? a. Almost all of the mass of the atom is concentrated in the nucleus. b. The protons and neutrons in the nucleus are very tightly packed. c. The number of protons and the number of neutrons are always the same in the neutral atom. d. The electrons occupy a very large volume compared to the nucleus. ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.4 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | nuclear structure 6. Which of the experiments listed below did not provide the information stated about the nature of the atom? a. The Rutherford experiment proved that the Thomson "plum pudding" model of the atom was essentially correct. b. The Rutherford experiment determined the charge on the nucleus. c. The cathode -ray tube proved that electrons have a negative charge. d. Millikan's oil-drop experiment showed that the charge on any particle was a simple multiple of the charge on the electron. ANSWER: a POINTS: 1 DIFFICULTY: easy TOPICS: 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | structure of the atom 7. Which of the following atomic symbols is incorrect? a. 3115P b. 199F Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 3 c. 3417Cl d. 3919K e. 158C ANSWER: e POINTS: 1 DIFFICULTY: easy TOPICS: 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 8. The element rhenium (Re) exists as two stable isotopes and 18 unstable isotopes. Rhenium -185 has in its nucleus a. 75 protons, 110 neutrons. b. 75 protons, 75 neutrons. c. 75 protons, 130 neutrons. d. 130 protons, 75 neutrons. e. not enough information is given. ANSWER: a POINTS: 1 DIFFICULTY: easy TOPICS: 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 9. Which of the following statements is(are) true? I. O and F have the same number of neutrons. II. C and N are isotopes of each other because their mass numbers are the same. III. O2– has the same number of electrons as Ne. a. I only b. II only c. III only d. I and II only e. I and III only ANSWER: c POINTS: 1 DIFFICULTY: moderate TOPICS: 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 10. Which among the following represent a set of isotopes? Atomic nuclei containing I. 20 protons and 20 neutrons. II. 21 protons and 19 neutrons. Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 4 III. 22 neutrons and 18 protons. IV. 20 protons and 22 neutrons. V. 21 protons and 20 neutrons. a. I, V b. III, IV c. I, II, III d. I, IV and II, V e. No isotopes are indicated. ANSWER: d POINTS: 1 DIFFICULTY: moderate TOPICS: 2.5 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 11. How many protons, neutrons, and electrons does the atom 39K have? a. 20 protons, 19 neutrons, 20 electrons b. 19 protons, 19 neutrons, 39 electrons c. 20 protons, 20 neutrons, 19 electrons d. 19 protons, 19 neutrons, 19 electrons e. 19 protons, 20 neutrons, 19 electrons ANSWER: e POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 12. An ion is formed I. by either adding protons to or subtracting protons from the atom. II. by either adding electrons to or subtracting electrons from the atom. III. by either adding neutrons to or subtracting neutrons from the atom. a. Only I is true. b. Only II is true. c. Only III is true. d. All of the statements are true. e. Two of the statements are true. ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 5 13. Which is the symbol for the isotope of nitrogen that has 7 protons and 8 neutrons? a. b. c. d. ANSWER: d POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 14. Which of the following represents a pair of isotopes? a. 157N, 158O b. 11H, 21H c. 147N, 158O d. 3115P, 3115P3– e. C, C60 ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 2.7 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 15. Which of the following statements is(are) true? I. The number of protons is the same for all neutral atoms of an element. II. The number of electrons is the same for all neutral atoms of an element. III. The number of neutrons is the same for all neutral atoms of an element. a. I, II, and III are all true. b. I, II, and III are all false. c. Only I and II are true. d. Only I and III are true. e. Only II and III are true. ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 2.7 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 6 16. The ion 14N3- has a. 7 protons, 7 neutrons, 4 electrons b. 7 protons, 7 neutrons,3 electrons c. 7 protons, 14 neutrons, 7 electrons d. 7 protons, 7neutrons, 10 electrons e. 7 protons, 7 neutrons, 7 electrons ANSWER: d POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 2.9 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance 17. The ion 127I– has a. 53 protons, 74 neutrons, 52 electrons b. 53 protons, 74 neutrons, 54 electrons c. 53 protons, 53 neutrons, 53 electrons d. 53 protons, 74 neutrons, 53 electrons e. 53 protons, 127 neutrons, 54 electrons ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.6 2.9 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance 18. An element's most stable ion forms an ionic compound with chlorine having the formula XCl 2. If the mass number of the ion is 89 and it has 36 electrons, what is the element and how many neutrons does it have? a. Sr, 51 neutrons b. Kr, 55 neutrons c. Se, 55 neutrons d. Kr, 53 neutrons e. Rb, 52 neutrons ANSWER: a POINTS: 1 DIFFICULTY: moderate TOPICS: 2.6 2.9 Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 7 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance 19. Which element does not belong to the family or classification indicated? a. Br, halogen b. Na, alkali metal c. As, lanthanides d. He, noble gas e. Ru, transition metal ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.7 2.8 KEYWORDS: early atomic theory | general chemistry | periodic table 20. Which are alkaline earth halides? a. MgO, MgS, CaO b. NaI, KBr, LiF c. CaF 2, MgBr 2, SrI2 d. Al2O3, In2O3, Ga2S3 e. PbI2, PbBr 2, CdF 2 ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 2.9 KEYWORDS: early atomic theory | general chemistry | periodic table 21. Select the group of symbols that would correctly complete the following statements, respectively. ___ is the heaviest noble gas. ___ is the transition metal that has 24 electrons as a 3+ ion. ___ is the halogen in the third period. ___ is the alkaline earth metal that has 18 electrons as a stable ion. a. Rn, Cr, Br, Ca b. Ra, Sc, Br, K c. Ra, Co, Cl, K d. Rn, Co, Cl, Ca ANSWER: d POINTS: 1 DIFFICULTY: moderate TOPICS: 2.8 Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 8 2.9 KEYWORDS: early atomic theory | general chemistry | periodic table 22. ______ form ions with a 2+ charge when they react with nonmetals. a. Halogens b. Noble gases c. Alkaline earth metals d. Alkali metals e. None of these choices ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: early atomic theory | general chemistry | group | periodic table 23. Which of the following formulas is not correct? a. Ba(OH) 2 b. LiS c. NaI d. KCl e. MgSO 3 ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance 24. Which of the following is not the correct chemical formula for the compound named? a. Fe2PO4 iron(II) phosphate b. BaBr 2 barium bromide c. Li2O lithium oxide d. HF hydrogen fluoride e. Mg3N2 magnesiumnitride ANSWER: a POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 9 25. Which of the following is not the correct name for the formula given? a. HClO hypochlorus acid b. Cr2S3 chromium(III)sulfide c. PCl 5 phosphoruspentachloride d. CoO cobalt(II) oxide e. CaSO 3 calciumsulfate ANSWER: e POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 26. Which is not the correct chemical formula for the compound named? a. iron(II) oxide FeO b. potassium sulfate K2SO4 c. sodium sulfide NaS d. zinc nitrate Zn(NO 3)2 e. calcium carbonate CaCO 3 ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 27. What is the correct formula for barium phosphate? a. Ba2PO4 b. Ba3(PO 4)2 c. Ba2(PO 4)3 d. Ba3PO4 e. BaPO 4 ANSWER: b POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 28. Which of the following is not the correct chemical formula for the compound named? Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 10 a. HF hydrogen fluoride b. MgO magnesium oxide c. Fe3PO4 iron(III) phosphate d. Li2O lithium oxide e. BaCl 2 barium chloride ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 29. Which formula is not correct? a. LiF b. Ca(NO 2)2 c. AlCl 2 d. NaC 2H3O2 e. MgS ANSWER: c POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical formula | chemical substance | early atomic theory | general chemistry | ionic substance 30. What is the correct formula for lead(IV) oxide? a. PbO 4 b. PbO 3 c. PbO d. Pb4O e. PbO 2 ANSWER: e POINTS: 1 DIFFICULTY: moderate TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 31. Which of the following is not the correct name for the formula given? a. PCl 5 phosphorus pentachoride Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 11 b. Fe2O3 iron(III) oxide c. HClO hypochlorous acid d. BaSO 3 barium sulfate e. CoO cobalt(II) oxide ANSWER: d POINTS: 1 DIFFICULTY: easy TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 32. Which of the following is not the correct chemical formula for the compound named? a. Na(OH) 2 sodium hydroxide b. Mg(C 2H3O2)2 magnesium acetate c. ZnS zinc sulfide d. Fe2O3 iron(III) oxide e. KCN potassium cyanide ANSWER: a POINTS: 1 DIFFICULTY: moderate TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 33. Which is the correct formula for copper(I) oxide? a. CuO b. CuO 2 c. Cu2O2 d. Cu2O e. Cu2O3 ANSWER: d POINTS: 1 DIFFICULTY: moderate TOPICS: 2.9 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 34. Complete the following table. Symbol Number of Number of Number of Net Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 12 Protons Neutrons Electrons Charge 31 38 3+ 52 75 54 29 2+ ANSWER: Symbol Number of Protons Number of Neutrons Number of Electrons Net Charge 82 124 82 0 31 38 28 3+ 52 75 54 2– 25 29 23 2+ POINTS: 1 DIFFICULTY: difficult TOPICS: 2.6 2.7 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope 35. Complete the following table. Symbol 56Fe2+ Number of protons 35 Number of neutrons 45 Number of electrons Atomic number Mass number Net charge 1- ANSWER: Symbol 56Fe2+ 80Br- Number of protons 26 35 Number of neutrons 30 45 Number of electrons 24 36 Atomic number 26 35 Mass number 56 80 Net charge 2+ 1- POINTS: 1 DIFFICULTY: difficult TOPICS: 2.6 2.7 KEYWORDS: atomic theory of matter | early atomic theory | general chemistry | isotope Name the following compounds: Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 13 36. Al2(SO 4)3 ANSWER: aluminum sulfate POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 37. NH4NO3 ANSWER: ammonium nitrate POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 38. NaH ANSWER: sodium hydride POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 39. K2Cr2O7 ANSWER: potassium dichromate POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 40. CCl 4 ANSWER: carbon tetrachloride POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: binary molecular compound | chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 41. AgCl ANSWER: silver chloride Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 14 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 42. CaSO 4 ANSWER: calcium sulfate POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 43. HNO 3 ANSWER: nitric acid POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: acid | chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 44. N2O3 ANSWER: dinitrogen trioxide POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: binary molecular compound | chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 45. SnI2 ANSWER: tin(II) iodide POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound Write the formula for: 46. sodium dichromate ANSWER: Na2Cr2O7 Chapter 02 - Atoms, Molecules, and Ions Copyright Cengage Learning. Powered by Cognero. Page 15 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 47. iron(III) oxide ANSWER: Fe2O3 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 48. dinitrogen trioxide ANSWER: N2O3 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: binary molecular compound | chemical substance | early atomic theory | general chemistry | nomenclature of simple compound 49. cobalt(II) chloride ANSWER: CoCl 2 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 50. aluminum hydroxide ANSWER: Al(OH) 3 POINTS: 1 DIFFICULTY: easy TOPICS: 2.8 KEYWORDS: chemical substance | early atomic theory | general chemistry | ionic compound | nomenclature of simple compound 51. hydrosulfuric acid ANSWER: H2S POINTS: 1 DIFFICULTY: easy