cns-geas 5 []
TRANSCRIPT
1 of 6
CNS-GEAS5 Chemistry
1. Which of the following does not describe a physical property? A. silvery color C. ice melting B. formation of rust * D. erosion
2. Early chemists wanted to A. turn lead into gold B. figure out why iron is rusted C. fashion tools and bowls from metal D. all of the these *
3. A statement or diea that attempts to explain observed information is called a A. scheme C. hypothesis * B. fact D. mission statement
4. Early chemists who wanted to turn lead to gold were called A. politicians C. crazy B. carpet baggers D. alchemists *
5. To perform this activity, you must have a control, a sample to be tested, and make careful observations and measurement A. scuba diving C. yoga B. experiment * D. evaporation
6. Antoine Lavoisier is called the A. father of modern chemistry * B. discoverer of beryllium C. father of quak theory D. brother of Larry Lavoisier
7. This idea predicts the results of testing based on past experimental data A. imagination C. theory * B. hunch D. rumor
8. The atomic theory was first described by A. Albert Einstein C. John Dalton * B. Albert Schweitzer D. Leonardo da Vinci
9. What is the difference betweena scientific theory and a law? A. The president has to sign a bill into law B. a theory can be tested, while a la is a hair-brained idea C. you are not usually arrested for performing a theory D. a scientific law is tested many times and believed to be without exception, while a theory is an idea *
10. The total partial pressure measurement of several combined gases is achieved by A. using a logarithmic calculator B. adding together the individual pressure of each gas * C. adding together the first two gases and dividing by the third D. multiplying the individual pressure of each gas
11. The difference between chemists’ work and that of today’s chemists is A. the types of machinery used B. science today is based on many repeated experiments by chemists all over the world * C. that alcemy was often performed to get rich D. slim to non
12. A decimal system of recording data was first described by A. Benjamin Franklin C. Gabriel Mouton * B. Antoine Lavoisier D. Plato
13. The International Bureau of Weights and Standards uses what metal in as a standard? A. gold C. titanium C. silver D. platinum *
14. Chemistry is an experimental science divided into A. pure chemistry and applied chemistry * B. acids and bases C. protons and electrons D. quarks and mesons
15. A method to write numbers in powers of 10 is called A. rounding B. exponential notation * C. includes writing all zeroes in the number out D. mathematical notation
16. 1/10,000 is written as what in exponential notation? A. 10^{-2} C. 10^{-5} B. 10^{-4} * D. 10^{-6}
17. A single measurement closest to its true value is the most A. reliable C. accurate * B. tested D. precise
18. Rounding is commonly used A. cook pizza B. number paint-by-number kits C. win at horseshoes D. number whole objects, like chickens *
19. Dimensional analysis A. compares squares to triangles B. studies the number of molecules in the ocean C. is a method o studying carbons to oxygen in the atmosphere D. changes one unit to another by using conversion factors *
20. To measure absolute zero, you use the A. Kelvin scale * C. Celsius scale B. Farenheit scale * D. bathroom scale
21. Antoine Lavoisier A. shouldn’t have gotten involved with French taxation B. insisted on precise measurements C. described the properties of matter D. all of these *
22. Subatomic particles are A. found in the core of an atom’s nucleus * B. only found on nuclear submaries C. made up of about 10^3 millimeters in length D. found on big sandwhiches
23. Which of the following commonly exists as a solid, liquid, and gas? A. carbon dioxide C. water * B. nitrous oxide D. hydrogen
24. Which form f matter is bendable, takes the shape of its container, and is pourable? A. gas C. crystal B. solid D. liquid *
25. An element has how many classes of properties to describe it? A. 1 C. 3 B. 2 * D. 4
26. When copper turns green, it is an example of its A. chemical property * C. value B. physical property D. thickness
27. Lavoisier identified how many elements that he thought were pure and indivisible? A. 18 C. 33 * B. 27 D. 42
2 of 6
28. A chemical experiment is A. never done in a laboratory B. a carefully controlled and measured testing of a sample’s properties * C. something to try once and then move on to other things D. always performed at room temperature
29. Which of the following samples is not a single, pure element in nature? A. oxygen C. nickel B. mercury D. iron *
30. Which of the followingis not a physical property of gold? A. it is highly reactive * B. it melts at 30 degrees Celsius C. it is naturally found as a solid D. it has a luster
31. The biggest problem the scientists had before the Periodic table was invented was A. dental hygiene B. cultural and language differences * C. funding D. finding time for a social life
32. Batter acid is the common name for A. formic acid C. nitric acid B. hydrochloric acid D. sulfuric acid *
33. Who liked music and came up with an octave rule? A. Antoine Beguyer de Chancourtois B. Charles Darwin C. John Newlands * D. Amadeus Mozart
34. What was the element discovered between titanium and calcium? A. silicon C. lead B. scandium * D. potassium
35. The chemical shorthand name for molybdenum is? A. Mo * C. Md B. Mb D. Mn
36. Plomb is the French name for which element? A. lead * C. platinum B. iron D. potassium
37. How many carbon atoms are in dichlorodiphenyltrichloroethane? A. 10 C. 14 * B. 12 D. 16
38. Meyer saw that element groups repeated, but was re first to notice that A. the groups were not at all of the same length * B. the groups were all eight elements long C. the overlap was not seen in the alkaline earth metals D. the groups were all eighteen elements long
39. Tera is the prefix used to show A. 10^2 C. 10^9 B. 10^6 D. 10^12 *
40. Lothar Meyer recognized hemoglobin combined with what element in the blood? A. helium C. nitrogen B. mercury D. oxygen *
41. Who blasted particles through gold foil and found that atoms had positive centers? A. Thomas Edison C. Steven Hawking B. Ernest Rutherford * D. Lothar Meyer
42. Nuclei are generally hog big I diameter? A. 120^{-8} m C. 10^{-12} m * B. 10^{-10} m D. 10^{-18} m
43. The molecular formula of saltpeter is A. CNO_3 C. HNO_3 B. NaClO D. KNO_3 *
44. Which of the following are not nucleons? A. protons C. electgrons B. dacrons D. hadrons
45. Gold with 79 protons has an atomic number of A. 52 C. 67 B. 57 D. 79 *
46. Hydrogen, flurine, chlorine, bromine, and iodine are all what kind of molecules? A. diatomic * C. triatomic B. monoatomic D. gases
47. Elemental phophorus (P) is composed of how many atoms? A. 2 C. 4 * B. 3 D. 6
48. The position of elements in a molecule has the biggest impact on A. color C. length B. reactivity * D. melting point
49. J. J. Thomson developed a model of the nucleus most commonly called the A. tapioca model C. flan model B. oatmeal raisin model D.plum pudding model *
50. Chemical formulas of molecules are A. always the same C. sometimes the same * B. never the same D. not often used
51. If the temperature of a sample if 14C, what is the temperature in Kelvin? A. 224 Kelvin C. 287 Kelvin * B. 259 Kelvin D. 295 Kelvin
52. A commonly used heat source in laboratory experiments is called a A. space heater C. light bulb B. Bunsen burner * D. toaster
53. J. J. Thomson performed experiments in A. a cathode ray tube * C. a beaker B. a venting hood D. a microwave overn
54. In Thomson’s plum pudding model, the pudding is made of A. positive chared ‘raisings’ B. milk, butter flour, and sugar C. a blob of positively charged particles * D. quarks
55. What particles has a charge of 1.6 x 10^{19} coulombs? A. xenon C. proton B. neuron D. electron *
56. Orbitals of the p-type come in A. sets of 2 C. sets of 5 B. sets of 3 * D. sets of 7
57. The further out from the nucleus an electron orbital is located, the A. less reactive the electrons B. more orbital diagrams you have to write
3 of 6
C. more reactive the electrons * D. more problems they have finding their way home
58. The boiling point of lithium is A. 488 C C. 1517 C * B. 1347 C D. 2212 C
59. Wolfram is the German name for which element? A. tin C. tungsten * B. gold D. mercury
60. 1s^2 2s^2p^6 3s^2p^6 4s^2 is the electron configuration for which element? A. calcium * C. nitrogen B. potassium D. zirconium
61. Elements can be placed in rows and columns of the Periodic table when you know something about their A. age C. value B. date of discovery D. properties *
62. Electrons that affect the reactivity of atoms with other alements are called A. friendly electrons C. strange electrons B. valence electrons * D. charmed electrons
63. If the shell capacity of an orbital 2n^2 = 18, what is n? A. n = 1 C. n = 3 * B. n = 2 D. n = 4
64. Eectrons in orbital diagrams are written as A. horizontally squiggly lines B. thick black dots C. superscripts to the elements D. up and down arrows *
65. When two or more liquids form a solution, they are A. always acids C. immiscible B. miscible * D. liquids
66. Spin magnetism is when A. electons are attracted and repelled by opposite and like charges * B. news reporters report the news from a certain angle C. disc jockeys play records well D. elements charnge colors around magnets
67. A solution made up of larger particles of one solution mixed and spread all through another solution is called a A. mess B. science fair project C. hydrophilic solution D. colloidal solution *
68. The number of bonds an atom can form with other atoms depends on A. its color B. the number of electrons it can share with its neighbor * C. the chemist D. its melting point
69. In chemistry, water is A. always a bad choice for washing hands B. commonly called the universal solvent * C. written as HO D. written as OH *
70. In general, when making solutions, the solvent is A. not typically used B. smaller than the solute
C. larger than the solute * D. always equal to the solute
71. Hydrogen sulfide smells like A. a locker room C. fermented fruit B. vanilla D. rotten eggs *
72. The “you scratch my back, I’ll scratch your” type of interaction describes A. gorilla social skills C. alchemy B. redox chemistry * D. radioactivity
73. When an element causes an oxidation of another substance A. it is itself reduced in the process * B. it is itself oxidized in the process C. there is never enough oxygen left to complete the reaction D. there is an over abundance of oxygen left to complete the reaction
74. The equation CuO + H_2 => Cu + H_2O is an example of A. solidification C. oxidation B. vaporization D. reduction *
75. Reduction describes A. electron (+) gain * C. electron (-) loss B. a helpful diet plan D. a reduced spending plan
76. The density of cesium is A. 1.5 g/cm^3 C. 2.3 g/cm^3 B. 1.9 g/cm^3 * D. 2.9 g/cm^3
77. Oxygen is a common A. actinide B. ingredient found in anaerobic reactions C. oxidizing agent * D. reducing agent
78. Stickoff is the German name for which element? A. gold C. aluminum B. nitrogen * D. arsenic
79. Hydrogen react with which elment ot form ammoni? A. oxygen C. nitrogen * B. carbon D. sulfur
80. Hydrogen combines with carbon and forms all but one of the following? A. hydrocarbons C. starches B. proteins D. table salt *
81. Atomic numver (Z) provides A. the nmber of protons ion thenucleus of an atom * B. the weight of anelement C. a shortcut to make the studyh of chemistry easier D. only the number of mesons in actinium
82. Covalent compounds are generally A. brittle solids B. lustrous hard olids C. soft solids with high melting points D. soft solids with low melting points *
83. The lowest common multiplies easiest to use when A. you have a graphic calculator B. the charge from one ion is used as the multiplier for the other ion * C. your instructor helps you with the math D. you have had a good breakfast first
84. In a binary covalent compound, boron is named before whoch of the following elements?
4 of 6
A. carbon C. oxygen B. sulfur D. all of these *
85. In chemistry, the prefix mono is A. used to mean one B. generally not used for the first non-metal in the formula * C. is a common illness fond anmong college students D. used for multiplying sets of three
86. Sulfur hexafluoride iw written as A. SF_3 C. SF_6 * B. SH_2F D. SFO_2
87. Calcium, barium, and cadmium ions all have a A. +1 charge C. +3 charge B. +2 charge * D. +4 charge
88. When a compound has word thio as a prefix, it means it contains A. tin C. sulfur * B. thallium D. selenium
89. Only electrons can A. bond with metals B. change to become ions * C. carry a positive charges D. bond with noble gases
90. Copper forms how many kinds of ions with unique charges? A. 1 C. 3 B. 2 * D. 4
91. The largest group of carbon-containing compounds is called the A. halogen group B. organic group * C. transition metal group D. inorganic group
92. Which of the following gives carbon at its simplest bonding form? A. methane * C. propane B. ethane D. butane
93. When electron pairs are equally shared between atoms of different elements, it is called A. being greedy C. van der Waals forces B. sectional bonding D. polarization energy *
94. A compound is called a binary compound when A. only two elements are bonded together * B. more than three elements are bonded together C. sixty carbons are bonded together D. a dozen elements are bonded together
95. What does the prefix “bi” mean in bicarbonate A. two atoms carbons are present B. two atoms of calcium ar epresetn C. hydrogen is present * D. oxygen is present
96. Carbon’s six electrons fill the A. 1s, 2s, and 2p orbitals B. 1s^2, 2s^2, and 2p^4 orbitals C. 1s^2, 2s^2, and 2p^2 orbitals * D. 1s, 2s^2, and 2p^2 orbitals
97. Monatomic icons can have A. only fixed charges B. fixed and variable charges * C. zero charge D. only two charges per ion
98. Which of the following does not contain a double bond? A. ethane C. polypropylene B. propane * D. butane
99. Sodium, potassium, and silver all have a A. +1 charge * C. +3 charge B. +3 charge D. +4 charge
100. Dinitrogen trioxide is written as A. NO C. N_2HO_3 B. N_2O_3 * D. N_2O_4
101. A double bond is normally shown with how many lines in a structural formula? A. 1 C. 3 B. 2 * D. 4
102. Petroleum crude oil comes primarily from the remains of A. unprocessed mercury B. iron fillings C. ice crystals D. prehistoric plant an danimals *
103. To make ethanol from ethane, you must ad which functional group? A. –CH_3 C. –NH_2 B. –H_2 D. –OH *
104. When a group of elements have man of the same characteristics and react the same, it is known as A. hydrogen bonding C. oxidation B. a homolgous series * D. reduction
105. The chemical formula for butane is A. C_2H_2 C. C_3H_10 B. C_6H_6 D. C_4H_10 *
106. Who came up with the word isotopes for different forms of an element? A. Hans Geiger C. Frederick Soddy * B. Lothar Meyer D. Marie Curie
107. Alpha (α) particles are A. a neutral ion form B. positively charged particles * C. negatively charged particles D. a negative ion form
108. Magic numbers are the numbers of A. the numbers to complete a perfect game of cards B. elements currently in the Periodic Table C. nuclear particles in a completed shell of protons or neutrons * D. protons found in every element
109. Radioactive uranium (238 U) decays eventually to A. lead (83 Pb) * C. lithium (32 Li) B. sodium (10 Na) D. nitrogen (14 N)
110. Scintillation counters are used to A. count coins in change machines B. detect nuclear radiation from light flashes made by radiation hitting a sample * C. find wood floating in the water after a storm D. count people going in to see a movie
111. Elements with atomic numbers greater than uranium (92 U) are called A. noble gases C. halogens * B. transuranium elements D. alakaline bases
5 of 6
112. Radioactive elements are used in A. toothpaste C. bicycles B. ice cream D. submarines *
113. “Heavy water” has a mass of A. 12 C. 20 * B. 15 D. 36
114. Non-metals are found where in the Periodic Table? A. middle section B. not in the Periodic Table C. top left-hand corner D. far right of the Periodic Table *
115. When making a 10-carat, 14-carat, and 18-carat gold A. 15 % nickel is added to pure gold B. various percentages of gold, copper, and silver are used * C. 10% lead is added to make 18-carat gold heavier D. silver is never used
116. When two or more metals or a metal and non-metal are combined it is called an A. alloy * C. accident B. actinide D. aluminum isotope
117. Which solid metal can melt in your hand like candy? A. molybdenum C. cesium * B. cobalt D. zirconium
118. What kind of fever affected thousands of Americans in the 1800s? A. rhodium fever C. niobium fever B. arsenic fever D. gold fever
119. Which ore is lead frequently found in? A. bauxite C. rhodite B. galena * D. quartz
120. The years between 4,000 and 1,100 BC have been called the A. Pre-Cambrian Period C. Bronze Age * B. Gold Rush D. Pre-MTV Age
121. Which of the following is not a general rule in the laboratory? A. Do not run your fingers through the burner flame B. Do not eat or drink anything in the lab C. Wash with a strong base before every experiment * D. Always wear goggles when using chemicals
122. Acetum is the Greek word for A. hot dog C. gladiator B. smelly feet D. vinegar *
123. When ions are held together by electrical attraction, it is sometimes called A. sticky element binding B. electrostatic attraction *
C. unilateral attraction D. phosphorescence
124. In sodium chloride (NaCl) an ionic bond formed when A. the sun is directly overhead B. the transfer of sodium electrons to the chlorine occurs * B. crystalline structure is planar in form D. the transfer of chlorine protons to sodium occurs
125. What is the easiest way to identify a sloppy chemistry student in the lab A. look for someone who always wears red B. look for someone cdarrying around models of the human eye C. look for someone with a really studious expression D. look for someone with holes in his clothes *
126. The electronegativity value of indium is A. 0.7 C. 1.7 * B. 1.2 D. 2.5
127. Chlorobromoiodomethane is an example of a A. chiral molecule * C. soap B. chlorofluorcarbon D. transition metal
128. Isomers that are mirror images of each other and superimposable are called A. chiral C. electron pairs B. enentiomers * D. elastomers
129. How many valence electrons does carbon have? A. 2 C. 6 B. 4 * D. 8
130. The unequal sharing of electrons between two atoms is called A. a dipole * C. may pol B. unfair D. achiral
131. Chemical bonds are made through the interaction of A. neutrons C. electrons * B. orlons D. mylons
132. Metallic bonds form between A. non-metal atoms B. noble gases C. a non=-metal and a halogen D. metal atoms *
133. Organic chemistry is the chemistry of A. nitrogen C. sodium B. carbon * D. oxygen
134. The density of water is A. 1.00 g/mL at ˚C * C. 1.00 g/mL at 40˚C B. 1.00 g/mL at ˚C D. 1.00 g/mL at 45˚C
135. The word chiral comes from the Greek word for A. chair C. water B. hand * D. calcium
136. Isomers have the same molecular formulas, but differend A. one-dimensional structure B. two-dimensional structure C. three-dimensional structure * D. four-dimensional structure
137. Lava, a cold mountain stream, and mercury are all A. very thick C. liquids * B. red D. metals
138. Relative density is also known as A. specific gravity * B. non-specific gravity C. microgravity D. relative resolution
139. The size, strength and shape of molecules, along with intermolecular forces A. are really nothing t worry about in chemistry B. are important only in calculating the atomic number C. have no effect at all on bonding properties D. have a big effect on the viscosity of liquids *
140. There are two basic tyhpes o fisomers, structural and A. audio isomers C. magnetic isomers B. stereoisomers * D. ambivalent isomers
6 of 6
141. The stronger the molecular forces of a liquid, the A. greater surface tension * B. weaker surface tension C lack of any surface tension D. greater the chace of radioacitivity
142. Up to 1700’s, spontaneous combustion of grain was though to be caused A. by crazed pyrotechnicians B. by mold C. by mice * D. by bad barley
143. Gases are the A. least compacted form of matter * B. easiest form of matter to measure when poruing C. mostcompacted form of matter D. are usually brittle
144. The constant number of atoms, ions, or molecules in a sample is known as A. Doyle’s Number C. Gasper’s Number B. Avogadro’s Number * D. Mozart’s Number
145. Carbon dioxide levels today are around A. 100 ppm C. 300 ppm B. 200 ppm D. 400 ppm *
146. A very important lesson we get from Gay-Lusac’s Law is A. to always use a graphing calculator B. wear open shoes when working in the lab C. to never heat a spray can * D. that pressure does not relate to temperature
147. The hemoglobin molecules that react very large sizes are called A. lead C. tin B. iron * D. silver
148. Protein molecules that reach very large sizes are called A. nanomolecules C. blimp molecules B. linebackers D. macromolecules *
149. The standard formula to calculate kinetic energy is A. KE = mv^2 C. KE = ½ mv^2 * B. KE = ½ v^2 D. KE = mv
150. The electronegativity value of fluorine is A. 1.4 C. 3.2 B. 1.9 D. 4.0 *
151. Atmospheric pressure is caused by A. the weight of the air per unit of area * B. your peers C. cosmic particles from outer space D. the humidity, not the heat
152. Amino acids contain an amino group (-NH_2) and a A. iodo gropu C. butyl group B. carboxyle group * D. cupric group
153. Gas molecules are A. seldom moving at al B. always on the move * C. packed densely together in the air D. something to be avoided at a jparty
154. Who discovered the antibacterial agent, salvarsan? A. Elisabeth Fleming C. Paul Erhlich * B. Linux Pauling D. Robert McKenna
155. Plant cell walls are made up of A. hemoglobin molecules B. noble gases C. alkaline metals D. complex carbohydrates with complicated, folded structures *
156. Covalent onds beteen atoms of the same elements are known as A. convenient bonds B. polar bonds C. non-polar covalent bonds * D. citrus bonds
157. Nitrogen oxides and what other group of gases were found to react with atmospheric ozone and reduce it? A. amino acid C. chlorofluorocarbon * B. zinc oxide D. green arcgon
158. Carbohydrates have the general formula of A. C_x(H_2O)_y * C. C(H_3O)_y C. C(H_2O) D. C_x(O_2)_y
159. Which of the following is known as the Ideal Gas Law? A. E = mc^2 B. PV = nRT * C. P_{total} = P_1 + P_2 + P_3 D. P_1 = ET
160. Radioactive decay occurs as a release of energy in the form of A. alpha, beta, and wonka particles B. alpha, beta, and gamma particles * C. beta and zuma particles D. grandma particles