Copy of Sample Exam Test 1 · Web viewThe density of gold is 19.3 g/mL. If the current price of...

Name: Class: Date:

FINAL EXAM PREP

Indicate the answer choice that best completes the statement or answers the question.

1. Which of these substances are compounds?

I. NeonII. Crude oilIII. WaterIV. Sodium chloride a. I b. I and III c. II, III, and IV d. III and IV e. II and IV

2. Which of these statements is true? a. Solids are compressible and have a variable shape. b. Solids are incompressible and have a variable shape. c. Solids are compressible and have a fixed shape. d. Solids are incompressible and have a fixed shape. e. Solids are compressible and may have a fixed or a variable shape.

3. Which of the following is not true of Rutherford's nuclear theory of an atom? a. The nucleus contains most of the mass of the atom. b. The nucleus contains all the positive charge of an atom. c. The number of electrons outside the nucleus is equal to the number of positively charged units inside the

nucleus of an atom. d. Tiny negatively charged electrons occupy most of the volume of an atom. e. An atom consists of a sphere of positive charge filled with tiny negatively charged particles called electrons.

4. Determine the density of a 50.0 g sample of mercury having a volume of 3.66 mL. Carry out the calculation to the correct number of significant digits. a. 13.66 g/mL b. 13.7 mL c. 183 g/mL d. 0.0732 g/mL e. 0.073 g/mL

5. The density of gold is 19.3 g/mL. If the current price of gold is $56.75 per gram, what is the volume of a nugget of gold worth $150.00? a. 1.15 mL b. 0.868 mL c. 1.72 mL d. 1.27 mL e. 0.137 mL

Copyright Cengage Learning. Powered by Cognero. Page 1

Name: Class: Date:

FINAL EXAM PREP

6. Convert 89.5 m to millimeters. a. 8.95 × 104 mm b. 8.95 × 10−4 mm c. 8.95 × 102 mm d. 8.95 × 10−2 mm e. 8.95 × 105 mm

7. Solve the problem.

3.728 + 6.272 = _____ a. 10 b. 10.0 c. 10.00 d. 10.000 e. 10.0000

8. An irregularly shaped piece of metal with a mass of 105 g was placed in a graduated cylinder that contained 25.00 mL of water. This raised the water level to 45.35 mL. What is the density of the metal? a. 0.238 g/mL b. 2.3 g/mL c. 4.2 g/mL d. 5.16 g/mL e. 20.35 g/mL

9. Which of these is the correct chemical symbol for carbon? a. C b. Ca c. Cl d. Cb e. Co

10. Nonmetals tend to _____ electrons to form _____ ions. a. lose; negative b. lose; positive c. gain; positive d. gain; negative e. gain; neutral


Name: Class: Date:

FINAL EXAM PREP

11. Which of these statements best describes the formation of a cation? a. An atom loses one or more electrons and becomes positively charged. b. An atom loses one or more electrons and becomes negatively charged. c. An atom gains one or more electrons and becomes positively charged. d. An atom gains one or more electrons and becomes negatively

charged. e. An atom loses one or more electrons and becomes electrically neutral.

12. The Ca2+ ion contains _____ protons and _____ electrons. a. 20; 20 b. 20; 22 c. 22; 20 d. 18; 20 e. 20; 18

13. What are the Z and A values for an atom of krypton that contains 46 neutrons? a. Z=36, A=46 b. Z=46, A=36 c. Z=36, A=82 d. Z=82, A=36 e. Z=82, A=46

14. Which of these is a nonmetal? a. Mg b. Br c. Cu d. Ge e. Li

15. Bromine is a member of which group/family? a. Halogens b. Noble gases c. Alkali metals d. Transition metals e. Alkaline earth metals

16. Determine the mass in grams of 3.45 × 1025 molecules of oxygen, O2. a. 0.556 grams b. 57.2 grams c. 458 grams d. 916 grams e. 1.83 × 103 grams


Name: Class: Date:

FINAL EXAM PREP

17. Atoms with the same atomic number but different numbers of neutrons are called _____. a. ions b. isotopes c. metalloids d. halogens e. alkalis

18. For an ionic compound, X2Y5, if the charge on each Y ion is −2, the charge on each X ion is _____. a. −2 b. −5 c. −10 d. +10 e. +5

19. The correct formula for a nitrate ion is _____. a. NO−

b. NO3+

c. NO3−

d. NO32−

e. NO2−

20. Determine the number of moles in a 1.95 × 10−2 gram sample of the amino acid glycine, CH2(NH2)CO2H. a. 2.6 × 10−4 moles b. 2.6 × 10−2 moles c. 1.46 moles d. 2.0 × 10−2 moles e. 3.85 × 10−1 moles

21. Which of these is the correct name for N2O3? a. Nitrogen trioxide b. Trinitrogen dioxide c. Dinitrogen trioxide d. Nitrogen dioxygenide e. Dinitrogenide dioxygenide

22. Which of these is the correct name for MgCl2? a. Magnesium chloride b. Magnesium chlorine c. Magnesium dichloride d. Magnesium monochloride


Name: Class: Date:

FINAL EXAM PREP

e. Monomagnesium monochloride

23. How many grams of nitrogen dioxide are required to produce 260 grams of nitrogen monoxide?

3 NO2 + H2O → 2 HNO3 + NO a. 8.67 grams b. 56.52 grams c. 132 grams d. 399 grams e. 1196 grams

24. Which of these is the correct Lewis dot structure for sulfur? a.

b.

c.

d.

e.

25. Covalent bonds are formed when electrons are _____. a. transferred from one atom to another b. split into smaller units c. shared between atoms d. destroyed during bonding e. heated during bonding

26. How many lone pairs of electrons are present around the central atom in PCl3? a. 0 b. 1 c. 2 d. 3 e. 20

27. Which of these molecules contains a triple bond? a. NH3

b. OCl2 c. C2H2

d. H2O e. MgO


Name: Class: Date:

FINAL EXAM PREP

28. Which of these is the correct molecular geometry of PCl3? a. Linear b. Trigonal planar c. Tetrahedral d. Trigonal pyramidal e. Bent

29. Which of these is the correct molecular geometry of CO2? a. Linear b. Trigonal planar c. Tetrahedral d. Trigonal pyramidal e. Bent

30. What is the correct conversion factor between atmospheres and torr? a. 1 atm = 1 torr b. 1 atm = 760 torr c. 760 atm = 1 torr d. 1 atm = 29.92 torr e. 29.22 atm = 1 torr

31. The temperature scale used in problems involving gas law equation must be expressed in _____. a. celsius b. kelvin c. fahrenheit d. rankine e. newton

32. Which of these is responsible for the rusting of metal and the dulling of paint? a. N2

b. O2

c. Ar d. He e. CO2

33. Which of these substances is polar? a. F2

b. N2

c. Ne d. CH4


Name: Class: Date:

FINAL EXAM PREP

e. NH3

34. Which of these substances would exhibit dipole forces? a. NCl3 b. Cl2 c. SiH4

d. CCl4 e. CO2

35. Liquids that vaporize easily and have high vapor pressures are known as _____. a. volatile liquids b. nonvolatile liquids c. explosive liquids d. cohesive liquids e. adhesive liquids

36. Which of these is/are an organic contaminant? a. Lead b. Mercury c. Asbestos d. Nitrates e. Gasoline

37. Which of the following is true of the speed of light? a. It increases as the frequency of light increases. b. It increases as the wavelength of light increases. c. It is constant; it does not depend on frequency and wavelength of

light. d. It decreases as the frequency of light increases. e. It decreases as the wavelength of light increases.

38. The speed of light is 3.0 x 108 _____. a. meters per second b. miles per hour c. kilometers per second d. kilometers per hour e. centimeters per second

39. Which of these is not a base found in DNA? a. Adenine b. Guanine c. Cytosine


Name: Class: Date:

FINAL EXAM PREP

d. Tyrosine e. Thymine

40. Which of the following elements is generally present in an amine apart from carbon and hydrogen? a. Chlorine b. Argon c. Helium d. Boron e. Nitrogen

41. Which of these statements about isomers is incorrect? a. Isomers have the same chemical formula. b. Isomers have different structural formulas. c. Isomers have essentially the same properties. d. Alkenes and alkynes exhibit isomerism based on the position of the double or triple

bonds. e. In alkanes, the greater the number of carbon atoms the greater the number of isomers.

42. A drug that lowers fever is known as a(n) _____ drug. a. analgesic b. anti-

inflammatory c. antipsychotic d. neurotransmitter e. antipyretic

43. Classify this structure.

a. Dipeptide b. Fatty acid c. Polypeptide d. Protein e. Triglyceride

44. Chains of amino acids with 50 units or fewer are called _____. a. polysaccharide

s


Name: Class: Date:

FINAL EXAM PREP

b. polypeptides c. proteins d. polyamides e. polyamines

45. The interaction of matter and light is known as _____. a. photodecomposition b. phosphorescence c. fluorescence d. spectroscopy e. photochemistry

46. Which of these represents the general formula for a fatty acid? a. RCO b.

c.

d.

e.

47. Which of these is the correct name for CH3CH2HC=CHCH3? a. Pentene b. Pentyne c. Hexene d. Hexyne e. Butadiene

48. The wavelengths of green and red lights are 500 nm and 700 nm, respectively. Which of the following statements is correct? a. The frequency of green light is more than the frequency of red

light. b. The frequency of green light is less than the frequency of red light. c. The energy of green light is less than the energy of red light. d. The frequency of green light is equal to the frequency of red light. e. The energy of green light is equal to the energy of red light.

49. Which of these proteins composes hair and wool?Copyright Cengage Learning. Powered by Cognero. Page 9

Name: Class: Date:

FINAL EXAM PREP

a. Hemoglobin b. α-keratin c. Lysozyme d. Insulin e. None of these

50. Which of these is not correct? a. Alkynes always contain a triple bond. b. Alcohols contain at least one oxygen atom. c. Amines contain at least one phosphorus atom. d. Carboxylic acids contain at least two oxygen atoms. e. An aldehyde contains a double bond.

51. Cisplatin is used for the treatment of which of the following? a. AIDS b. Cancer c. Depression d. Bacterial infection e. None of these

52. Which of these colors of visible light has the lowest energy? a. Red b. Orange c. Yellow d. Blue e. Violet

53. Amino acids are linked together by _____ to form proteins. a. disulfide linkages b. hydrogen bonds c. alpha linkages d. hydrophobic interactions e. peptide bonds

54. Which of these drugs is not an anti-depressant? a. Prozac b. Valium c. Methadone d. Zoloft e. Paxil

55. Which of these is a carbohydrate?


Name: Class: Date:

FINAL EXAM PREP

a. Cellulose b. Glucose c. Fructose d. Lactose e. All of these

56. Which of these elements is the basis for organic chemistry? a. Hydrogen b. Nitrogen c. Sodium d. Carbon e. Chlorine

57. Which of these is the generic symbol for the functional group "alcohols"? a. R-Cl b. R-OH c.

d.

e.

58. Which of these is the generic symbol for the functional group "ketones"? a. R-Cl b. R-OH c.

d.

e.

59. When excited, a particular element emits yellow light with wavelength 589 nm. Identify the element. a. Hydrogen b. Sodium c. Lithium d. Helium


Name: Class: Date:

FINAL EXAM PREP

e. Mercury

60. Which of the following is true of a hydrocarbon? a. It consists of carbon and hydrogen atoms. b. It can form a ring structure. c. It is a good fuel for combustion reactions. d. It can contain double or triple bonds. e. All of these

61. An FM radio station, broadcasts at a frequency of 1.039 × 108 s−1. What is the wavelength of the radio waves, in meters? c = 3 × 108 m/s a. 0.346 m b. 2.89 m c. 3.11 × 108 m d. 3.11 × 1016 m e. 3.0 × 10−9 m

62. Which of these molecules link together to form proteins? a. Vitamins b. Amino acids c. Monosaccharides d. Fatty acids e. Triglycerides

63. Ethanol or grain alcohol acts as a _____. a. stimulant b. narcotic c. depressant d. steroid e. hallucinogen

64. Identify the function/functions of acetaminophen.

I. Fever reducerII. Pain relieverIII. Anti-inflammatoryIV. Long-lasting effect a. I only b. I and II c. I and III d. I, II, and III e. I, II, and IV

65. Which of these substances is one of the most widely used drugs in the world?Copyright Cengage Learning. Powered by Cognero. Page 12

Name: Class: Date:

FINAL EXAM PREP

a. Aspirin b. Tylenol c. Anacin-3 d. Nuprin e. Motrin IB

66. Which of these opioid compounds is/are created by the human body? a. Opium b. Endorphins c. Heroin d. Nitrous oxide e. Hormones

67. How many structural isomers does pentane have? a. 1 b. 2 c. 3 d. 4 e. 5

68. Tiny packets of energy that travel at the speed of light are known as _____. a. photons b. X-rays c. carotenes d. chlorophyll

s e. gamma rays

69. Arrange these spectral regions in order of increasing frequency (X-rays, Microwaves, Ultraviolet, Visible). a. Microwaves < Visible < Ultraviolet < X-

rays b. Microwaves < Visible < X-rays <

Ultraviolet c. Ultraviolet < X-rays < Visible <

Microwaves d. Ultraviolet < Visible < X-rays <

Microwaves e. X-rays < Microwaves < Ultraviolet <

Visible

70. Which of the following is/are the side effects of aspirin?

I. The acidity of aspirin irritates the stomach.Copyright Cengage Learning. Powered by Cognero. Page 13

Name: Class: Date:

FINAL EXAM PREP

II. Aspirin causes a small amount of stomach bleeding.III. Aspirin reduces the formation of blood platelets. a. II only b. I and II c. II and III d. III only e. I, II, and III

71. The alpha helix structure is a _____ structure of proteins. a. primary b. secondary c. tertiary d. quaternary e. parent

72. Which particle completes this equation? (Here, m means unstable Ba-137.)

→ ____ + a. An alpha particle b. A beta particle c. A gamma particle d. A positron e. A proton

73. Thorium-234 decays via beta emission to produce _____. a.

b.

c.

d.

e.

74. Krypton-85 decays via beta emission to produce _____. a.

b.

c.

d.


Name: Class: Date:

FINAL EXAM PREP

e.

75. Which type of radioactive emission is analogous to an electron emission? a. Positron b. Neutron c. Alpha particle d. Gamma ray e. Beta particle

76. Which of the following radioactive decays does not produce an atom of a different element? a. Alpha b. Beta c. Gamma d. Electron capture e. Positron

77. What percentage of a radioactive sample will remain after two half-lives? a. 50% b. 25% c. 12.5% d. 6.25% e. 0%

78. Calculate the mass defect of 37Cl if its mass is 36.9659 amu; the mass of proton is 1.0073 amu, and the mass of neutron is 1.0087 amu. a. 2.693 amu b. 0.388 amu c. 0.341 amu d. 0.332 amu e. 0.263 amu

79. Which among the following radioactive exposures would be the most damaging if it occurs inside a human body? a. Gamma radiation b. Alpha emission c. Beta emission d. Positron emission e. Electron emission


Name: Class: Date:

FINAL EXAM PREP

80. A newly discovered rock formation contains fossils that are estimated to be 11,000 years old. Which radioactive dating method/methods would give the most accurate age of the fossils?

I. Uranium datingII. Carbon-14 datingIII. Uranium–thorium dating a. I only b. II only c. III d. I and II e. I and III

81. Which of these health concerns is/are most common for higher radon exposure? a. Thyroid cancer b. Breast cancer c. Lung cancer d. Birth defects e. Leukemia

82. The half-life of an element is 15 minutes. A sample contains 20,000 atoms of the element. How many atoms of the element will remain after 30 minutes? a. 2,000 b. 5,000 c. 10,000 d. 2,500 e. 1,000

83. The use of energy to move atoms in a nonrandom or orderly fashion is known as _____. a. heat b. thermodynamics c. enthalpy d. work e. entropy

84. In thermodynamics, the substance we are studying is called the _____ and everything else is referred to as the _____. a. inlet; the outlet b. system; enthalpy c. state; surroundings d. system; the

environment e. system; surroundings


Name: Class: Date:

FINAL EXAM PREP

85. How many calories are there in 3.76 joules? a. 0.899 calories b. 1.11 calories c. 15.7 calories d. 90 calories e. 1.6 × 105 calories

86. How many joules of heat can be produced from a 170-Calorie package of crackers? a. 7.11 × 105 J b. 4.07 × 104 J c. 41.0 J d. 24.6 J e. 0.0246 J

87. Which of the following temperature conversions is correct? a. 0 K = 273oC b. 0 K = −273oC c. 0 K = 273oF d. 0 K = −273oF e. 0 K = 0°C

88. What is the coefficient of water when the following equation is balanced?

_____ C5H12 + _____ O2 → _____ CO2 + _____ H2O a. 2 b. 6 c. 10 d. 12 e. 16

89. What is the coefficient oxygen (O2) when the following equation is balanced?

_____ CH3OH + _____ O2 → _____ CO2 + _____ H2O a. 1 b. 2 c. 3 d. 4 e. 6

90. Which of the following statements related to acid rain is incorrect? a. Acid rain accelerates the rusting of iron. b. Acid rain contributes to reduced visibility in some areas.


Name: Class: Date:

FINAL EXAM PREP

c. The formation of highly reactive H− ions makes the rain acidic. d. Acid rain is formed when SO2 or NOx compounds react with water. e. Acid rain lowers the ability of some trees to grow and fight disease.

91. Which of the following compounds can combine with the moisture in the air, resulting in the formation of acid rain? a. CO b. PAN c. NO2

d. O3

e. CO2

92. Which of the following compounds is capable of binding to hemoglobin in place of oxygen, affecting the heart and respiratory system a. CO b. CO2

c. NO d. NO2

e. H2O

93. The energy associated with the position or composition of an object is known as _____. a. electric energy b. mechanical energy c. potential energy d. magnetic energy e. thermal energy

94. Which of the following is a cleaner alternative fuel source to fossil fuels? a. Solar energy b. Wind power c. Hydroelectric power d. Geothermal energy e. All of these

95. In which of these regions does hydroelectric power have the greatest potential for growth? a. Mountainous regions b. Desert regions c. Developing countries d. Developed countries e. Island nations


Name: Class: Date:

FINAL EXAM PREP

96. Which of the following are disadvantages of wind power?

I. Wind farms use large portions of land, which cannot be used for other purposes.II. Wind farms are undependable since winds are not always present when needed.

III. Wind power generation is extremely expensive and hence not cost competitive with other fuels.

IV. Wind power is nonrenewable; once it is used up, it cannot be replenished. a. I and IV b. II and IV c. I and III d. I and II e. I, II, and III

97. Which of the following is an environmental problem associated with hydroelectric power? a. Flooding of upstream canyons b. Reduced nutrient flow downstream c. Interrupted spawning patterns of fish d. Destruction of naturally majestic

wilderness e. All of these

98. Which of the following alternative energy sources is considered renewable? a. Biomass energy b. Solar energy c. Hydroelectric power d. Wind energy e. All of these

99. Which of the following is the most common type of semiconductor found in photovoltaic cells? a. Arsenic b. Carbon c. Uranium d. Silicon e. Hydrogen

100. Which of the following is the product of hydrogen combustion? a. Methane b. Water c. Oxygen d. Carbon dioxide e. Ethanol


Name: Class: Date:

FINAL EXAM PREP

101. Which of the following will not lead to the conservation of household energy? a. Electric heaters b. Lowering thermostats c. Using fluorescent lighting d. Installing double-pane windows e. All of these

102. Which of the following consumes the least amount of electricity per year? a. Television b. Dishwashers c. Refrigerators d. DVDs e. Hot tubs

104. Which of these substances is an acid? a. NaHCO3

b. NaOH c. NH3

d. KOH e. CH3COOH

105. The formula of the hydroxide ion is _____. a. OH−

b. OH+

c. H3O+

d. H3O−

e. OH2−

106. Which of these is the best definition of a Bronsted-Lowry acid? a. Any substance that donates H+ ions in solution b. Any substance that produces OH− ions in solution c. Any substance that accepts a lone pair of

electrons d. Any substance that neutralizes a base in solution e. Any substance that accepts H+ ions in solution

107. Which of these statements about weak bases is correct? a. They are concentrated. b. They have a very high pH.


Name: Class: Date:

FINAL EXAM PREP

c. They dissociate 100% into ions. d. They dissociate very little into

ions. e. Both B and C are correct.

108. Which of these substances is represented in the diagram?

a. A weak acid b. A weak base c. A strong acid d. A strong base e. A salt

109. Which of these substances is represented in the diagram?

a. A weak acid b. A weak base c. A strong acid d. A strong base e. A salt

110. Which of these acids is responsible for the sourness in many fruits? a. Muriatic acid b. Citric acid c. Sulfuric acid d. Acetic acid e. Benzoic acid

111. Which of these acids is a parent molecule for making aspirin? a. Muriatic acid b. Citric acid c. Benzoic acid d. Acetic acid e. Salicylic acid


Name: Class: Date:

FINAL EXAM PREP

112. Which of the following acids are found in most soft drinks? a. Acetic and citric acids b. Lactic and citric acids c. Malic and lactic acids d. Carbonic and phosphoric acids e. Hydrochloric and

phosphoric acids

113. Rain is naturally acidic as a result of _____ gas reacting with the water. a. SO2

b. CO2

c. NO2

d. Cl2 e. N2

114. For every change of one unit on the pH scale, the H3O+ concentration changes by a factor of _____. a. 1 b. 10 c. 100 d. 0.1 e. 0.01

115. _____ is responsible for the disagreeably sour taste in vomit. a. Citric acid b. Lactic acid c. Hydrochloric acid d. Phosphoric acid e. Carbonic acid

116. Which of the following laboratory acids is used in the cleaning of metals? a. Sulfuric acid b. Nitric acid c. Hydrochloric acid d. Acetic acid e. Phosphoric acid

117. Which of the following bases is used as a common floor and window cleaner? a. Sodium carbonate b. Magnesium


Name: Class: Date:

FINAL EXAM PREP

hydroxide c. Calcium carbonate d. Ammonia e. Baking soda

118. Which of these occurs(s) during reduction? a. Gaining electrons b. Gaining hydrogen c. Losing oxygen d. All of these e. None of these

119. Which of these occur(s) during oxidation?

I. Gaining electronsII. Losing hydrogenIII. Losing oxygen a. I only b. II only c. I and II d. II and

III e. I, II, III

120. Which of these is not an oxidation-reduction reaction? a. CuO(s) + H2(g) → Cu(s) + H2O(l) b. CO2(g) + H2(g) → CO(g) + H2O(l) c. I−(aq) + NO3−(aq) → NO(g) + I2(s) d. Mn(OH)2(s) + MnO4− (aq) → MnO4

2− (aq) e. HCl(aq) + NaOH(aq) → NaCl(aq) + H2O (l)

121. Which substance is reduced in this redox equation?

HF + Cl2 → F2 + HCl a. HF


Name: Class: Date:

FINAL EXAM PREP

b. Cl2 c. F d. HCl e. None of these

122. Which of these pairs is correctly matched? a. Oxidation = the loss of oxygen b. Reduction = the reducing agent c. Oxidation = the loss of electrons d. Oxidation = the gain of hydrogen e. Reduction = the loss of hydrogen

123. Which of these substances is the most common reducing agent? a. H2

b. H3O+

c. O2

d. H2O e. CO

124. The process by which plants generate glucose is known as _____. a. respiration b. photosynthesis c. the Haber process d. digestion e. rusting

125. The series of redox reactions that provides animals energy is known as _____. a. respiration b. photosynthesis c. the Haber process d. metabolism e. rusting

126. Which of these is/are oxidation-reduction reaction(s)?

I. PCl3 + 3H2O → 3HCl + H3PO3

II. Fe2O3 + 3CO → 2Fe + 3CO2

III. CaCO3 + HClO3 → Ca(ClO3)2 + CO2 + H2O a. I only b. II only c. I and II


Name: Class: Date:

FINAL EXAM PREP

d. I and III e. I, II, and III

127. In electrochemical cells, _____ occurs at the anode and _____ occurs at the cathode. a. oxidation; reduction b. reduction; oxidation c. oxidation; oxidation d. gain of mass; oxidation e. loss of mass; reduction

128. Atoms or molecules with unpaired electrons are called _____. a. inert elements b. reducers c. oxidizers d. free radicals e. antioxidants

129. _____ is used as a coating in the galvanization process. a. Magnesium b. Zinc c. Chlorine d. Iodine e. Carbon


Date post:	08-Apr-2019
Category:	Documents
Upload:	vuquynh
View:	222 times
Download:	0 times

Copy of Sample Exam Test 1 · Web viewThe density of gold is 19.3 g/mL. If the current price of...

Documents