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Study Resources (Chemistry)

91) The greatest hazard in using plastics in home building materials and furnishings is that some A) poison children who eat them. B) cause cancer. C) are slippery. D) form poisonous gases when burned. 92) Production of PCBs was discontinued in 1977, yet PCBs are still found in the environment.  The reason for this is A).
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71) Which of the following is a condensation polymer? A) polyvinyl chloride B) polyurethane C) polyethylene D) Plexiglass 72) Which of the following is NOT a condensation polymer? A) polypropylene B) polyester C) Dacron D) polyurethane 73) Which of the following natural polymers is a polyamide? A) cotton fibers B) wood fibers C) silk D) starch 74) Which of the following statements about addition and.
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31) As opposed to most solids, when glass is heated, it A) melts rapidly to a liquid over a narrow temperature range. B) goes directly into the gas phase; a process known as sublimation. C) separates into its individual components. D) gradually softens over a wide temperature range. 32) The properties of glass are modified.
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11.3   Short Answer Questions 1) In the fission of uranium-235, which particle causes and propagates the chain reaction? 11.4   Essay Questions 1) What is transmutation? 2) Discuss why radioisotopes are used as tracers in medical diagnostics and research. 3) Rank the penetrating power of nuclear radiation from the least to most penetrating. 4) Compare and contrast.
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41) What is the general formula for a cycloalkane? A) CnHn B) CnH2n+2 C) CnH2n-2 D) CnH2n 42) Propane, benzene, acetylene, and 2-butene are all examples of A) alkenes. B) alkanes. C) aromatic compounds. D) hydrocarbons. 43) Which of the following compounds is a homolog of CH2=CH2? A) CH3CH3 B) CH3CH2CH3 C) CH3CH=CH2 D) CH3C?CH 44) The most important commercial organic compound is A) methane, CH4. B).
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81) Cesium-137 and Strontium-90 are both produced in nuclear fallout.  Cesium-137 has a half-life of 30 years.  Strontium-90 has a half-life of 28 years.  Strontium-90 is considered to be a greater health threat because A) strontium is chemically similar to calcium but is more readily removed from the body than calcium.
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21) Which material is characterized by a well-ordered, three dimensional structure of SiO4 tetrahedra? A) asbestos B) mica C) glass D) quartz 22) Which material is characterized by a two dimensional sheetlike arrangement of SiO4 tetrahedra? A) asbestos B) mica C) glass D) quartz 23) Which material is characterized by a chain arrangement of SiO4 tetrahedra? A) asbestos B) mica C) glass D) quartz 24).
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71) Critical mass is A) the minimum amount of fissionable material that will sustain a chain reaction. B) the maximum amount of fissionable material that will sustain a chain reaction. C) the amount of fissionable material that produces the most energy when split. D) the largest amount of fissionable material that can be obtained.
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61) Organic compounds that contain a benzene ring or possess certain properties similar to those of benzene are called ________ compounds. A) alkaloid B) acidic C) aromatic D) saturated 62) A molecular formula of an aromatic hydrocarbon is A) C7H16. B) C9H18. C) C5H8. D) C6H6. 63) Chlorinated hydrocarbons, such as carbon tetrachloride CCl4, make good dry cleaning solvents because A).
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41) A polymer that conducts electricity is A) polyacetylene. B) polyethylene. C) polyvinyl chloride. D) polystyrene. 42) The plastic material used to make transparent "throw-away" drinking cups and disposable coffee cups is A) polyvinyl chloride. B) polystyrene. C) polyethylene. D) bakelite plastic. 43) This formula in which n can be a very large number represents which of the following polymers? A).
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51) Which one of the following radioactive isotopes is useful in the investigation of thyroid problems? A) Uranium-235 B) Barium-120 C) Iodine-131 D) Cesium-145 52) Positron emission tomography (PET) is a A) therapy for cancer using positrons. B) diagnostic technique for monitoring dynamic processes in the body, such as brain activity. C) device for containing a nuclear fusion.
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11) Thorium-234 undergoes beta decay: Th  →  e  +  Q What is Q? A) Pa B) Ac C) Th D) Th 12) Uranium-238 decays by emission of an alpha particle.  The product of this decay is A) U B) Pa C) Th D) Ra 13) When thorium-234 undergoes beta decay, what other product is formed? A) thorium-233 B) protactinium-234 C) radium-88 D) uranium-238 14) When radium-223.
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9.2   True/False 1) A compound that has the general formula CnH2n+2 will be an alkene. 2) The general formula for a(n) alkane that contains 5 carbons will contain 12 hydrogens. 3) The general formula for a(n) alkene that contains 5 carbons will contain 12 hydrogens. 4) More than half of the ethylene produced in.
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81) Crystalline polymers are composed of A) randomly organized polymer chains. B) highly organized polymer chains. C) a mixture of random and highly organized polymer chains. D) none of the above 82) Lycra bicycle shorts and exercise clothing contain fibers that have great strength and rigidity as well as the ability to stretch.  These fibers.
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11) Carbonates are composed of A) carbon and oxygen. B) carbon, oxygen and metals. C) carbon, sulfur and metals. D) carbohydrates and metals. 12) Which of the following is NOT a major component of the earth's rocks and minerals? A) carbonates B) organic compounds C) oxides D) silicates 13) Limestone is made up of A) Al2O3. B) CaCO3. C) Fe2O3. D) PbS. 14) All of.
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51) Which of the following compounds is saturated? A) butene B) butane C) propyne D) butadiene 52) A molecular formula of an alkene is A) C7H16. B) C9H18. C) C5H8. D) C6H6. 53) A molecular formula of an alkyne is A) C7H16. B) C9H18. C) C5H8. D) C6H6. 54) Which of the following is an alkene? A) propene B) propyne C) propane D) xylene 55) Which of the following is.
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81) Excessive ingestion of ethanol over a long period may cause which of the following? A) physiological addiction B) memory loss C) deterioration of the liver D) all of the above 82) Ethanol acts as a mild A) stimulant. B) depressant. C) hallucinogen. D) narcotic. 83) What is the percent alcohol by volume in a beverage that is 36 proof? A).
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11.2   True/False Questions 1) Over 75% of the radiation to which the average person is exposed comes from natural sources. 2) Balanced nuclear equations must have the same number of electrons on each side of the equation. 3) Nuclear reaction rates are not affected by changes in temperature. 4) After one half-life, 50% of.
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121) The general formula for an ester is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'. 122) The compound formed by the reaction of a carboxylic acid with an alcohol is a(n) A) aldehyde. B) ester. C) ether. D) ketone. 123) Many of the flavors isolated from foods are A) carboxylic acids. B) esters. C) alcohols. D) ketones. 124) An analgesic is a substance that.
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51) The extraction of aluminum from its ore requires a great deal of A) heat. B) electricity. C) water. D) sunlight. 52) In comparing the actual relative costs of aluminum and steel, which of the following should be considered? A) cost of mining and transporting the ore B) cost of environmental maintenance C) cost of extracting the metal D).
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21) LDPE finds applications as A) food wrap. B) rigid containers. C) drain pipes. D) television cabinets. 22) LDPE stands for A) linearly dense polyethylene. B) light diffuse polyethylene. C) low-density polyethylene. D) lightly doped polyethylene. 23) HDPE stands for A) high-density polyethylene. B) hot-dipped polyethylene. C) high-dose polyethylene. D) highly-diffuse polyethylene. 24) Thermoplastic polymers may be A) heated and reformed. B) heated, but not reformed. C) decomposed.
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21) The United States imports almost no metals from foreign countries. 22) The United States has basically depleted its supply of metal ores that contain a high percentage of the desired metal. 23) Plastics form the largest proportion of solid waste in the average sanitary landfill. 24) The best way to dispose of.
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12.2   True/False Questions 1) The earth's mantle is primarily composed of silicates. 2) The most abundant element in the earth's surface is aluminum. 3) One of the more common rocks on earth is limestone. 4) The organic portion of the earth's lithosphere is greater than the inorganic part. 5) Fire was one of the earliest.
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11) The structure of the carbonyl group is C=O. 12) The carboxyl functional group contains both a carbonyl group and an amino group. 13) Carboxylic acids generally have very pleasant odors. 14) "On water" procedures utilize rapid stirring to produce a suspension of reactants with large surface areas to increase reaction rates. 15) Microwave.
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  12.1   Multiple Choice Questions 1) The three major structural parts of the earth are A) core, mantle and crust. B) lithosphere, atmosphere and crust. C) mantle, crust and atmosphere. D) lithosphere, hydrosphere and atmosphere. 2) Which of the following are part of the earth's crust? A) core, mantle and atmosphere B) lithosphere, hydrosphere and atmosphere C) mantle, stratosphere and.
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91) Compounds with a hydroxyl group attached directly to a benzene ring are called A) alcohols. B) aromatic hydrocarbons. C) ethers. D) phenols. 92) Phenols are often used as A) anesthetics. B) disinfectants. C) fragrances. D) insecticides. 93) A phenol has a(n) ________ group attached to a benzene ring. A) amino B) carbonyl C) carboxyl D) hydroxyl 94) Phenol, sometimes called carbolic acid, was.
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71) In representing the general formula of various functional groups, the symbol R stands for A) a halogen atom. B) a ring. C) an aromatic group. D) an alkyl group. 72) In organic chemistry, compounds are generally classified by A) state. B) functional group. C) color. D) odor. 73) The parts of organic molecules that give compounds characteristic chemical and.
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51) The pendant group in polystyrene is a(n) A) benzene ring. B) chlorine atom. C) ethyl group. D) methyl group. 52) The pendant group in polypropylene is a(n) A) benzene ring. B) chlorine atom. C) ethyl group. D) methyl group. 53) The monomer from which polyethylene is made has ________ attached to the C=C. A) only H atoms B) a Cl.
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  10.1   Multiple Choice Questions 1) Monomers are A) small building blocks of polymers. B) small polymers. C) ethylene. D) all of the above 2) The word polymer means many A) parts. B) sides. C) rings. D) carbons. 3) The word monomer means A) one bond. B) one unit. C) many bonds. D) many rings. 4) Which statement relating monomers and polymers is correct? A) They have the.
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11) The first "practical" application of celluloid was A) billiard balls. B) movie film. C) stiff collars. D) airplane wings. 12) Which of the following is NOT a natural polymer? A) cotton B) wool C) starch D) celluloid 13) The first attempts to make synthetic polymers involved A) combining monomers of ethylene to form polyethylene. B) modifying a naturally occurring polymer.
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111) One of the primary ingredients in vinegar is A) acetic acid. B) butyric acid. C) formic acid. D) hydrochloric acid. 112) The -COOH group represents the A) carboxyl group. B) carbonyl group. C) alcohol group. D) aldehyde group. 113) The simplest carboxylic acid is commonly known as A) acetic acid. B) butyric acid. C) formic acid. D) propionic acid. 114) One of the compounds.
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11) Alpha particles will penetrate much farther into a sample than beta particles will. 12) A helium nucleus contains two protons and two neutrons.  The mass of the helium nucleus is greater than the combined masses of two protons and two neutrons because binding energy has been added. 13) Plutonium-239 can undergo.
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131) Amines are derivatives of A) ammonia. B) methane. C) water. D) amino acids. 132) The compound CH3NH2 is called A) methylamine. B) dimethylamine. C) trimethylamine. D) methyl ammonia. 133) The compound (CH3)3N is called A) methylamine. B) dimethylamine. C) trimethylamine. D) methyl ammonia. 134) When an amine dissolves in water the pH of the solution will be A) < 7. B) = 7. C) > 7. D) More.
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101) The compound below is a(n) A) alcohol. B) aldehyde. C) carboxylic acid. D) ketone. 102) The compound below is a(n) A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol. 103) The compound below is a(n) A) carboxylic acid. B) aldehyde. C) ketone. D) alcohol. 104) The general formula for a ketone is A) ROR'. B) RCOOH. C) RCOR'. D) RCOOR'. 105) The compound below is commonly known as A) acetone. B).
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141) Which of the following families of organic compounds does NOT contain an oxygen atom? A) alcohol B) amine C) carboxylic acid D) ketone 142) Organic compounds with rings that contain atoms other than carbon are called A) aromatic compounds. B) heterocyclic compounds. C) heterogeneous compounds. D) perfluoro compounds. 143) The non-carbon atom(s) generally found in heterocyclic compounds are A) sulfur. B).
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9.3   Short Answer Questions 1) What feature of carbon is probably most responsible for the fact that 95% of all compounds contain carbon?  Discuss your answer briefly. 2) The formula of the three carbon alkane is ________. 3) The name of the three carbon alkane is ________. 4) The formula for the two carbon.
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12.3   Essay Questions 1) What is a synergistic effect?  Use asbestos and cigarette smoking as an example. 2) Although cement and concrete themselves are relatively non-polluting, their production and use are a source of several potential environmental problems.  Describe two examples. 3) The "coking" process in steel making is a significant source of.
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41) Radioisotopes have been used to determine the age of all of the following EXCEPT A) brandy. B) cloth. C) living plants. D) wood. 42) The bombardment of nitrogen-14 with alpha particles produces oxygen-17 and a proton.  This process is called A) alpha emission. B) transmutation. C) isotopic enrichment. D) fission. 43) In 1932, James Chadwick bombarded beryllium-9 with alpha.
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61) One of the disadvantages of polybutadiene rubber for automobile tires is A) poor resistance to gasoline and oils. B) its color. C) density. D) expense. 62) The substance in paints that hardens to form a continuous surface coating is called a A) pigment. B) binder. C) solvent. D) thinner. 63) In order for a synthetic polymer to be used.
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41) Which process changes porous pottery into nonporous pottery? A) firing B) glazing C) roasting D) synergizing 42) The amount of iron on the earth today as compared to the amount of iron 120 years ago (approximately the beginnings of the Industrial Revolution) is A) less. B) essentially the same. C) more. D) cannot be estimated or predicted. 43) Bronze.
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21) Phosphorus-30 decays by positron emission.  The product is A) silicon-30. B) phosphorus-29. C) sulfur-30. D) sulfur-29. 22) The process of positron emission can be considered as the A) conversion of a neutron to a proton and a positron.  The positron is emitted. B) conversion of a neutron to a proton and an electron.  The electron is.
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10.2   True/False Questions 1) All polymers are made from synthetic sources. 2) All polymers made from polyethylene will have the same density. 3) Thermosetting polymers can be melted and reformed into different shapes. 4) Polyethylene has double bonds, but ethylene does not. 5) Thermosetting resins will decompose rather than melt when they are heated to.
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