General Chemistry Exam Practice
Tests
Course Introduction
General Chemistry provides a comprehensive introduction to the fundamental principles of chemistry, including atomic structure, chemical bonding, stoichiometry, states of matter, thermochemistry, and chemical reactions. The course emphasizes the understanding of key concepts such as the periodic table, chemical equations, acids and bases, solutions, kinetics, and equilibrium. Through a combination of theoretical frameworks and practical laboratory experiments, students develop critical thinking skills and gain a solid foundation necessary for advanced study in chemistry and related scientific disciplines.
Recommended Textbook
CHEM2 Chemistry in Your World 2nd Edition by Hogg
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1151 Verified Questions
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Page 2
Chapter 1: Living in a World of Chemistry
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Sample Questions
Q1) Which of the following explorations could be enhanced by our knowledge of DNA?
A) development of drug to cure cancer
B) use of genetically modified food to produce edible vaccines
C) determine if a convicted felon is actually innocent
D) all of these
Answer: D
Q2) Which of the following are linked to the release of CFCs?
A) "ozone holes" in the stratosphere
B) increased air pollution
C) drinking water pollution
D) increased food spoilage
Answer: A
Q3) The perception of the severity of a risk escalates with time.
A)True
B)False
Answer: False
Q4) Natural risks seem less worrisome than human-made risks.
A)True
B)False
Answer: True
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Chapter 2: The Chemical View of Matter
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Sample Questions
Q1) The equation, 2 C(s) + O<sub>2</sub>(g) \(\to\) 2 CO(g), tells us
A) the number of atoms of each kind in reactants and products is the same.
B) carbon monoxide (CO) is a product.
C) two atoms of carbon undergo reaction.
D) all of these
Answer: D
Q2) Alfred Nobel ____________?
A) discovered dynamite
B) proposed the metric system
C) developed the STM, scanning tunneling microscope
D) discovered kinetic energy
Answer: A
Q3) What information is not provided by the formula, C<sub>4</sub>H<sub>10</sub>, for butane?
A) butane being an organic compound
B) the molecular formula
C) the relative number of atoms of each kind
D) the shape of the molecule
Answer: D
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Chapter 3: Atoms and the Periodic Table
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Sample Questions
Q1) In the following set, which atom is the largest?
A) Ar
B) Mg
C) Cl
D) Si
Answer: B
Q2) Which radiation type was shown to be identical to N electron?
A) alpha
B) beta
C) gamma
D) None are identical to an electron.
Answer: B
Q3) The number of valence electrons represented is __________.
Answer: five
5
Q4) The element with atomic number 29 is classified as a metal.
A)True
B)False
Answer: True
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Chapter 4: The Air We Breathe
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Sample Questions
Q1) Which pollutant can be removed by centrifuged separations?
A) particulates
B) sulfur dioxide
C) carbon dioxide
D) ozone
Q2) Convert 0.284 ppb to a percent and express the answer in scientific notation.
A) 2.84 \(\times\) 10<sup>-8 </sup>%
B) 2.84 \(\times\) 10<sup>-10 </sup>%
C) 2.84 \(\times\) 10<sup>-9 </sup>%
D) 2.84 \(\times\) 10<sup>10 </sup>%
Q3) Nitrogen and oxygen are the most abundant gases in the atmosphere.
A)True
B)False
Q4) Aerosols enhance smog by
A) concentrating pollutants.
B) producing the fog part of smog.
C) providing a reaction medium for the production of secondary pollutants such as H<sub>2</sub>SO<sub>4</sub>.
D) all of the above
Q5) The troposphere is labeled with the number______.
Page 6
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Chapter 5: Chemical Bonding and States of Matter
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Sample Questions
Q1) The normal boiling point of water is
A) what you measure in a laboratory.
B) independent of atmospheric pressure.
C) the one measured at 760 mm pressure (1 atm).
D) 273 K.
Q2) Which of the following substances has polar covalent bonds?
A) CaF<sub>2</sub>
B) KBr
C) NH<sub>3</sub>
D) CH<sub>4</sub>
Q3) Gases
A) exert a pressure.
B) are compressible.
C) are miscible, they mix with other gases in any proportion.
D) all of these
Q4) The total number of valence electrons in hexane is_________.
Q5) The total number of single bonds in hexane is__________.
Q6) The total number of bonding electron pairs in hexane is____________.
Q7) If X was the element K and Y the element O, which type of bond would form?
Q8) Which type of bond would be found in hydrochloric acid, HCl?
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Chapter 6: Carbon Dioxide and the Greenhouse Effect
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Sample Questions
Q1) The following correctly ranks the forms of electromagnetic radiation in order of increasing energy (smallest to largest).
UV < Visible < IR
A)True
B)False
Q2) Convert 370 ppm carbon dioxide to a percentage?
A) 0.00037%
B) 0.0037%
C) 0.037%
D) 0.37%
Q3) Which arrow or sets of arrows represent the natural greenhouse effect?
A)A
B)B
C)C
D)D
Q4) What happens to most of the UV radiation in our atmosphere?
A) absorbed by plants
B) absorbed by greenhouse gases
C) absorbed by ozone
D) absorbed by nitrogen
Page 8
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Chapter 7: Chlorofluorocarbons and the Ozone Layer
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Sample Questions
Q1) Decreasing ozone concentrations are only observed over Antarctica.
A)True
B)False
Q2) What chemical bond is broken by a photon of light in a typical CFC molecule?
A) C-H
B) Cl-Cl
C) H-Cl
D) C-Cl
Q3) In a photochemical reaction,
A) the chemical reaction is energized by light.
B) nitrogen dioxide must be present.
C) ozone is always formed.
D) none of the above
Q4) A reaction that would serve to decrease the amount of oxygen is reaction
Q5) Which type of radiation is effective at damaging DNA?
A) UV-A
B) UV-B
C) UV-C
D) visible
Page 9
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Chapter 8: Chemical Reactivity: Chemicals in Action
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Sample Questions
Q1) Consider the following two statements. "Energy can be converted from one form to another but cannot be destroyed nor created." "The total amount of matter and energy in the universe is constant."
Both of these are included in the first law of thermodynamics.
A)True
B)False
Q2) Refer to Exhibit 8-1. The atomic weights for Zn, H and Cl are 65.4 g, 1.0 g and 35.5 g, respectively. What is the mass for two moles of hydrochloric acid?
A) 36.5 g
B) 71.0 g
C) 35.5 g
D) 73.0 g
Q3) What is the number of atoms in 1.0 mol of nitrogen dioxide, NO<sub>2</sub>?
A) 1.8 \(\times\) 10<sup>24 </sup>atoms
B) 1.8 \(\times\) 10<sup>23 </sup>atoms
C) 2.0 \(\times\)10<sup>23 </sup>atoms
D) 3 atoms
Q4) The reactants are represented by the letter _______.
Page 10
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Chapter 9: Acid-Base Reactions
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Sample Questions
Q1) What is the concentration difference between pH = 10 and pH = 7?
A) 100
B) 0.001
C) 3
D) 1000
Q2) Which of the following is associated with stomach fluid?
A) HNO<sub>3</sub>
B) H<sub>3</sub>PO<sub>4</sub>
C) HCl
D) H<sub>3</sub>PO<sub>4</sub> and HCl
Q3) An ion commonly found in many antacids is
A) OH<sup>-</sup>.
B) H<sub>3</sub>O<sup>+</sup>.
C) SO<sub>4</sub><sup>2-</sup>.
D) NH<sub>4</sub><sup>+</sup>.
Q4) A base is
A) an OH<sup>-</sup> ion donor.
B) a hydrogen ion donor.
C) a substance like magnesium hydroxide, Mg(OH)<sub>2</sub>.
D) both a and c
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Chapter 10: Oxidation-Reduction Reactions
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Sample Questions
Q1) Which of the following might prevent corrosion of iron?
A) a water spray
B) a coating of zinc
C) acid treatments
D) salt solutions
Q2) Which of the following is not necessary for corrosion of iron?
A) iron
B) water
C) light
D) oxygen
Q3) If the electrolyte contains nitrate ions, they will move from compartment ___ to compartment ___.
Q4) In a lead storage battery, what lead compound is formed at both the cathode and the anode during discharge?
A) lead oxide (PbO<sub>2</sub>)
B) lead chloride (PbCl<sub>2</sub>)
C) lead sulfate (PbSO<sub>4</sub>)
D) lead oxide (PbO)
Q5) The electrons flow from electrode _____ to electrode _____.
Q6) The Fe<sup>2+</sup> should be placed at letter ____.
Page 12
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Chapter 11: Water, Water Everywhere but Not a Drop to Drink
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Sample Questions
Q1) The region that provides a source of water to both surface and ground water resources is indicated by letter _____.
Q2) Acid rain (acid deposition) contributes to which of the following problems?
A) dead lakes where fish cannot survive
B) damage to forests
C) leaching of metal ions into groundwater
D) all of these
Q3) Of the household wastes listed below (all of which would be considered industrial hazardous wastes), which one could be disposed of down the sink?
A) oil-based paints
B) furniture polish
C) latex paint
D) automotive antifreeze
Q4) Which of the following is responsible for the largest amount of water consumed in the United States?
A) households
B) agriculture
C) industry
D) thermoelectric power
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Chapter 12: Energy and Hydrocarbons
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Sample Questions
Q1) In the balanced equation for the combustion of one mole of ethanol, the coefficient of water is _____.
Q2) Fractional distillation of petroleum
A) separates and purifies all of the hydrocarbons in crude oil.
B) separates fractions, each of which contain many hydrocarbons.
C) is the final step in refining gasoline.
D) fractions large molecules into smaller ones.
Q3) Fermentation of carbohydrates is a source of A) MTBE.
B) ethanol.
C) ethers.
D) methanol.
Q4) Which fuel has the largest heat of combustion per gram?
A) hydrogen
B) ethanol
C) wood
D) gasoline
Q5) The number of carbon to hydrogen single bonds that are broken is_______.
Q6) During the combustion of one mole of ethanol, the number of O-H bonds formed is
Page 14
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Chapter 13: Nuclear Changes and Nuclear Power
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Sample Questions
Q1) Short half-lives are the results of high rates of decay, and long half-fives are the results of low rates of decay.
A)True
B)False
Q2) Beta particles, positrons and gamma rays all are considered to have a mass of 0.
A)True
B)False
Q3) Elements with an atomic number greater than 83 are unstable.
A)True
B)False
Q4) In the symbol <sup>238</sup>U, the 238 is
A) the mass number.
B) the atomic number.
C) the number of neutrons in the atom.
D) the number of protons in the atom.
Q5) The fusion of nuclei requires
A) a critical mass.
B) plasma at extremely high temperatures.
C) heavy nuclei.
D) slow moving (thermal) neutrons.
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Chapter 14: Organic Chemicals and Polymers
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Sample Questions
Q1) What is the monomer in Teflon?
A) CF=CF, difluoroacetylene
B) CH<sub>2</sub>=CH<sub>2</sub>, ethylene
C) CF<sub>2</sub>=CF<sub>2</sub>, tetrafluoroethylene
D) CF<sub>3</sub>CF<sub>3</sub>, hexafluoroethane
Q2) Which of the following is an incorrect pairing between the given formula and the type of functional group?
A)
CH<sub>2</sub>=CHCH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub> CH<sub>2</sub>CH<sub>3</sub>, alkene
B) CH<sub>3</sub>OCH<sub>3</sub>, amine
C) CH<sub>3</sub>CH<sub>2</sub>OH, alcohol
D) (CH<sub>3</sub>)<sub>2</sub>CO, ketone
Q3) Which of the following is a correct pairing between the given formula and the type of functional group?
A) CH<sub>3</sub>CH<sub>2</sub>CH<sub>3</sub>, alkene
B) CH<sub>3</sub>OCH<sub>3</sub>, ether
C) CH<sub>3</sub>CH<sub>2</sub>NH<sub>2</sub>, amide
D) CH<sub>3</sub>COOH, aldehyde
Q4) This substance would have a pH________than 7.
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Chapter 15: The Chemistry of Life
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Sample Questions
Q1) Hydrolysis of lactose yields
A) "D-glucose only."
B) "D-glucose and D-fructose."
C) "\(\beta\)-D-glucose and \(\alpha\)-D-glucose."
D) "D-galactose and D-glucose."
Q2) The process in which mRNA is used to synthesize protein
A) transcription.
B) translation.
C) replication.
D) recombination.
Q3) Chemically, fats and oils are A) esters.
B) amides.
C) alcohols.
D) ketones.
Q4) Base pairing between the two strands of DNA occurs by means of A) hydrogen bonding.
B) coordinate covalent bonds.
C) ionic bonds.
D) disufide bonds.
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Chapter 16: Nutrition: the Basis of Healthy Living
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Sample Questions
Q1) Which of the following list contains the abbreviation for "good" cholesterol and describes its function?
A) LDL, transports cholesterol to arteries
B) HDL, transports cholesterol to arteries
C) LDL, transports cholesterol to liver for excretion
D) HDL, transports cholesterol to liver for excretion
Q2) MgSiO<sub>3</sub> found in table salt which is hygroscopic is a member of which group?
A)preservative
B)flavor enhancer
C)sequestrant
D)food flavor
E)food colors
F)pH controllers
G)anticaking
H)stabilizers and thickeners
Q3) Organic foods contain no additives.
A)True
B)False
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Page 18
Chapter 17: Chemistry and Medicine
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Sample Questions
Q1) Increase production of neurotransmitters
A)stimulant
B)depressant
C)hallucinogen
D)antitussive
E)expectorant
F)analgesic
G)antihistamine
H)antibiotic
Q2) Crack is a form of
A) cocaine.
B) codeine.
C) morphine.
D) heroin.
Q3) The addition of sodium pyrophosphate to toothpaste is for the purpose of A) removing tartar.
B) removing plaque.
C) detergent.
D) minimize cavities.
Q4) Caffeine would be classified as ___________________.
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Chapter 18: The Chemistry of Useful Materials
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Sample Questions
Q1) Which of the following is not an ingredient in Portland cement?
A) anhydrous calcium oxide
B) silicon dioxide
C) hydrated calcium sulfate
D) aluminum oxide
Q2) The main source of the metal magnesium, Mg, is the Earth's crust.
A)True
B)False
Q3) Older glass beverage bottles were green due to the presence of which metal ion in the silica from which the bottle was made?
A) Fe<sup>2+</sup>
B) Cu<sup>2+</sup>
C) Sn<sup>4+</sup>
D) Ca<sup>2+</sup>
Q4) Which of the following metals is recovered from sea water?
A) magnesium
B) iron
C) copper
D) both b and c
Q5) A p-type semiconductor is labeled with the letter______.
Page 20
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Chapter 19: Feeding the World
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Sample Questions
Q1) The most widely used herbicide is
A) primicarb.
B) carbaryl.
C) 2,4-dichlorophenoxyacetic acid.
D) dioxin.
Q2) _____________can produce new breeds of plants ten times faster than natural breeding methods.
Q3) Leaching is most effective in removing which of the following from soil?
A) Group 13 salts
B) transition metals
C) Group 1 and Group 2 salts
D) aluminum and iron
Q4) Nitrogenase catalyzes the reactions that produce ammonia from atmospheric nitrogen.
A)True
B)False
Q5) Chlorosis (evidenced by green plants turning yellow) results from too much iron in the soil.
A)True
B)False
21
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