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1 | |
An organic compound is a compound that |
| | A) | contains carbon and was formed only by a living organism. |
| | B) | is a natural compound that has not been synthesized. |
| | C) | contains carbon, whether it was formed by a living thing or not. |
| | D) | was formed by a plant. |
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2 | |
There are millions of organic compounds but only thousands of inorganic compounds because |
| | A) | organic compounds were formed by living things. |
| | B) | there is more carbon on the earth's surface than any other element. |
| | C) | atoms of elements other than carbon never combine with themselves. |
| | 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 |
| | A) | more than 10 isomers. |
| | B) | 10 carbon atoms in each molecule. |
| | C) | only single bonds. |
| | 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? |
| | A) | 4 |
| | B) | 8 |
| | C) | 10 |
| | D) | 16 |
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5 | |
Isomers are compounds with the same |
| | A) | molecular formula with different structures. |
| | B) | molecular formula with different atomic masses. |
| | C) | atoms, but different molecular formulas. |
| | D) | structures, but different formulas. |
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6 | |
Isomers have |
| | A) | the same chemical and physical properties. |
| | B) | the same chemical, but different physical properties. |
| | C) | the same physical, but different chemical properties. |
| | D) | different physical and chemical properties. |
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7 | |
The organic compound 2,2,4-trimethylpentane is an isomer of |
| | A) | propane. |
| | B) | pentane. |
| | C) | heptane. |
| | D) | octane. |
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8 | |
The hydrocarbons with a double covalent carbon-carbon bond are called |
| | A) | alkanes. |
| | B) | alkenes. |
| | C) | alkynes. |
| | D) | none of the above. |
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9 | |
According to their definitions, which of the following would not occur as unsaturated hydrocarbons? |
| | A) | alkanes |
| | B) | alkenes |
| | C) | alkynes |
| | D) | None of the above is correct. |
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10 | |
Petroleum is believed to have formed mostly from the anaerobic decomposition of buried |
| | A) | dinosaurs. |
| | B) | fish. |
| | C) | pine trees. |
| | 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? |
| | A) | CH4 |
| | B) | C5H12 |
| | C) | C16H34 |
| | D) | C40H82 |
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12 | |
Tetraethyl lead ("ethyl") was added to gasoline to increase the octane rating by |
| | A) | increasing the power by increasing the heat of combustion. |
| | B) | increasing the burning rate of the gasoline. |
| | C) | absorbing the pings and knocks. |
| | D) | decreasing the burning rate. |
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13 | |
The reaction of C2H2 + Br2 → C2H2Br2 is a (an) |
| | 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 |
| | A) | monomer. |
| | B) | dimer. |
| | C) | trimer. |
| | D) | polymer. |
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15 | |
Chemical reactions usually take place on an organic compound at the site of (a) |
| | A) | double bond. |
| | B) | lone pair of electrons. |
| | C) | functional group. |
| | D) | any of the above. |
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16 | |
The R in ROH represents |
| | A) | a functional group. |
| | B) | a hydrocarbon group with a name ending in "-yl." |
| | C) | an atom of an inorganic element. |
| | D) | a polyatomic ion that does not contain carbon. |
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17 | |
The OH in ROH represents |
| | A) | a functional group. |
| | B) | a hydrocarbon group with a name ending in "-yl." |
| | C) | the hydroxide ion, which ionizes to form a base. |
| | 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? |
| | A) | 2.5 proof |
| | B) | 5 proof |
| | C) | 10 proof |
| | D) | 50 proof |
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19 | |
An alcohol with two hydroxyl groups per molecule is called |
| | A) | ethanol. |
| | B) | glycerol. |
| | C) | glycerin. |
| | D) | glycol. |
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20 | |
A bottle of wine that has "gone bad" now contains |
| | A) | CH3OH. |
| | B) | CH3OCH3. |
| | C) | CH3COOH. |
| | D) | CH3COOCH3. |
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21 | |
A protein is a polymer formed from the linking of many |
| | A) | glucose units. |
| | B) | DNA molecules. |
| | C) | amino acid molecules. |
| | D) | monosaccharides. |
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22 | |
Which of the following is not converted to blood sugar by the human body? |
| | A) | lactose |
| | B) | dextrose |
| | C) | cellulose |
| | D) | glycogen |
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23 | |
Fats from animals and oils from plants have the general structure of a (an) |
| | A) | aldehyde. |
| | B) | ester. |
| | C) | amine. |
| | D) | ketone. |
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24 | |
Liquid oils from plants can be converted to solids by adding what to the molecule? |
| | A) | metal ions |
| | B) | carbon |
| | C) | polyatomic ions |
| | D) | hydrogen |
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25 | |
The basic difference between a monomer of polyethylene and a monomer of polyvinyl chloride is the |
| | A) | replacement of a hydrogen by a chlorine. |
| | B) | addition of four fluorines. |
| | C) | elimination of double bonds. |
| | D) | removal of all hydrogens. |
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26 | |
Many synthetic polymers become a problem in the environment because they |
| | A) | decompose to nutrients, which accelerates plant growth. |
| | B) | do not readily decompose and tend to accumulate. |
| | C) | do not contain vitamins as natural materials do. |
| | D) | become a source of food for fish, but ruin the flavor of fish meat. |
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