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1 | |
An organic compound is a compound that
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| | A) | contains carbon and was formed only by a living organism.
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| | B) | is a natural compound that has not been synthesized.
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| | C) | contains carbon, no matter if it was formed by a living thing or not.
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| | D) | was formed by a plant.
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2 | |
There are millions of organic compounds but only thousands of inorganic compounds because
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| | A) | organic compounds were formed by living things.
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| | B) | there is more carbon on the earth's surface than any other element.
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| | C) | atoms of elements other than carbon never combine with themselves.
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| | D) | carbon atoms can combine with up to four other atoms, including other carbon atoms.
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3 | |
You know for sure that the compound named decane has
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| | A) | more than 10 isomers.
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| | B) | 10 carbon atoms in each molecule.
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| | C) | only single bonds.
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| | D) | all of the above.
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4 | |
An alkane with 4 carbon atoms would have how many hydrogen atoms in each molecule?
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| | A) | 4
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| | B) | 8
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| | C) | 10
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| | D) | 16
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5 | |
Isomers are compounds with the same
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| | A) | molecular formula with different structures.
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| | B) | molecular formula with different atomic masses.
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| | C) | atoms, but different molecular formulas.
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| | D) | structures, but different formulas.
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6 | |
Isomers have
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| | A) | the same chemical and physical properties.
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| | B) | the same chemical, but different physical properties.
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| | C) | the same physical, but different chemical properties.
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| | D) | different physical and chemical properties.
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7 | |
The organic compound 2,2,4-trimethylpentane is an isomer of
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| | A) | propane.
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| | B) | pentane.
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| | C) | heptane.
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| | D) | octane.
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8 | |
The hydrocarbons with a double covalent carbon-carbon bond are called
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| | A) | alkanes.
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| | B) | alkenes.
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| | C) | alkynes.
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| | D) | none of the above.
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9 | |
According to their definitions, which of the following would not occur as unsaturated hydrocarbons?
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| | A) | alkanes
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| | B) | alkenes
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| | C) | alkynes
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| | D) | None of the above are correct.
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10 | |
Petroleum is believed to have formed mostly from the anaerobic decomposition of buried
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| | A) | dinosaurs.
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| | B) | fish.
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| | C) | pine trees.
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| | D) | plankton and algae.
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11 | |
The label on a container states that the product contains "petroleum distillates." Which of the following hydrocarbons is probably present?
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| | A) | CH4
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| | B) | C5H12
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| | C) | C16H34
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| | D) | C40H82
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12 | |
Tetraethyl lead ("ethyl") was added to gasoline to increase the octane rating by
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| | A) | increasing the power by increasing the heat of combustion.
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| | B) | increasing the burning rate of the gasoline.
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| | C) | absorbing the pings and knocks.
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| | D) | decreasing the burning rate.
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13 | |
The reaction of C2H2 + Br2 --> C2H2Br2 is a |
| | A) | substitution reaction. |
| | B) | addition reaction. |
| | C) | addition polymerization reaction. |
| | D) | substitution polymerization reaction. |
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14 | |
Ethylene molecules can add to each other in a reaction to form a long chain called a
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| | A) | monomer.
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| | B) | dimer.
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| | C) | trimer.
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| | D) | polymer.
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15 | |
Chemical reactions usually take place on an organic compound at the site of (a)
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| | A) | double bond.
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| | B) | lone pair of electrons.
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| | C) | functional group.
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| | D) | any of the above.
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16 | |
The R in ROH represents
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| | A) | a functional group.
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| | B) | a hydrocarbon group with a name ending in "-yl."
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| | C) | an atom of an inorganic element.
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| | D) | a polyatomic ion that does not contain carbon.
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17 | |
The OH in ROH represents
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| | A) | a functional group.
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| | B) | a hydrocarbon group with a name ending in "-yl."
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| | C) | the hydroxide ion, which ionizes to form a base.
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| | D) | the site of chemical activity in a strong base.
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18 | |
What is the proof of a "wine cooler" that is 5 percent alcohol by volume?
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| | A) | 2.5 proof
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| | B) | 5 proof
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| | C) | 10 proof
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| | D) | 50 proof
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19 | |
An alcohol with two hydroxyl groups per molecule is called
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| | A) | ethanol.
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| | B) | glycerol.
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| | C) | glycerin.
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| | D) | glycol.
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20 | |
A bottle of wine that has "gone bad" now contains
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| | A) | CH3OH.
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| | B) | CH3OCH3.
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| | C) | CH3COOH.
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| | D) | CH3COOCH3.
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21 | |
A protein is a polymer formed from the linking of many
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| | A) | glucose units.
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| | B) | DNA molecules.
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| | C) | amino acid molecules.
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| | D) | monosaccharides.
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22 | |
Which of the following is not converted to blood sugar by the human body?
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| | A) | lactose
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| | B) | dextrose
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| | C) | cellulose
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| | D) | glycogen
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23 | |
Fats from animals and oils from plants have the general structure of a (an)
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| | A) | aldehyde.
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| | B) | ester.
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| | C) | amine.
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| | D) | ketone.
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24 | |
Liquid oils from plants can be converted to solids by adding what to the molecule?
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| | A) | metal ions
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| | B) | carbon
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| | C) | polyatomic ions
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| | D) | hydrogen
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25 | |
The basic difference between a monomer of polyethylene and a monomer of polyvinyl chloride is
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| | A) | the replacement of a hydrogen by a chlorine.
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| | B) | the addition of four fluorines.
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| | C) | the elimination of double bonds.
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| | D) | the removal of all hydrogens.
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26 | |
Many synthetic polymers become a problem in the environment because they
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| | A) | decompose to nutrients, which accelerates plant growth.
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| | B) | do not readily decompose and tend to accumulate.
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| | C) | do not contain vitamins as natural materials do.
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| | D) | become a source of food for fish, but ruin the flavor of fish meat.
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2002 McGraw-Hill Higher Education