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1 | |
Organic chemistry is the study of |
| | A) | any compound from any living thing. |
| | B) | carbon-containing compounds that were formed by living things. |
| | C) | any compound with carbon as the principal element. |
| | D) | none of the above. |
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2 | |
Carbon can form many different compounds because it can |
| | A) | make a molecule in the shape of a cube, tetrahedron, or cylinder. |
| | B) | combine with other carbon atoms in addition to other elements. |
| | C) | combine with more metals than other elements. |
| | D) | combine with more nonmetals than other elements. |
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3 | |
A hydrocarbon is an organic compound consisting of |
| | A) | water and carbon. |
| | B) | any number of elements as long as they include carbon and hydrogen. |
| | C) | carbon and hydrogen. |
| | D) | carbon, hydrogen, and oxygen. |
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4 | |
A hydrocarbon with two double covalent bonds between carbon atoms is a (an) |
| | A) | alkane. |
| | B) | alkene. |
| | C) | alkyne. |
| | D) | aromatic hydrocarbon. |
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5 | |
Organic compounds called isomers have |
| | A) | the same molecular formulas but different physical structures. |
| | B) | different molecular formulas with the same physical structures. |
| | C) | different molecular formulas with the same chemical properties. |
| | D) | none of the above. |
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6 | |
The number of carbon atoms in a molecule of octane is |
| | A) | 1. |
| | B) | 2. |
| | C) | 4. |
| | D) | 8. |
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7 | |
Organic compounds called aromatic hydrocarbons are compounds that |
| | A) | have a wonderful odor. |
| | B) | are based on the benzene rings structure. |
| | C) | occur in nature with all carbons bonds saturated. |
| | D) | occur in nature with all carbon bonds unsaturated. |
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8 | |
A gasoline mixture of hydrocarbons that burns very rapidly has |
| | A) | a low octane number. |
| | B) | a high octane number. |
| | C) | many branched chains. |
| | D) | smaller hydrocarbon molecules. |
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9 | |
An organic molecule with a general formula of ROH is a (an) |
| | A) | ether. |
| | B) | ester. |
| | C) | alcohol. |
| | D) | organic acid. |
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10 | |
An organic molecule with a general formula of RCOOH is a (an) |
| | A) | ester. |
| | B) | organic acid. |
| | C) | ketone. |
| | D) | aldehyde. |
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11 | |
The characteristic odor and taste of fruit such as bananas, oranges, and pineapples comes from certain |
| | A) | ketones. |
| | B) | ethers. |
| | C) | aldehydes. |
| | D) | esters. |
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12 | |
The human body breaks down starches to |
| | A) | monosaccharides. |
| | B) | simple sugars. |
| | C) | glucose. |
| | D) | any of the above. |
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13 | |
The direct reserve source of energy in the muscles of a human is |
| | A) | glycol. |
| | B) | glycerol. |
| | C) | glycogen. |
| | D) | dextrose. |
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14 | |
All proteins are made up of a side chain and |
| | A) | alpha-amino acid. |
| | B) | amine. |
| | C) | a nitrogen atom. |
| | D) | peptide. |
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15 | |
Fats and oils are esters formed from three fatty acids and glycerol into a (an) |
| | A) | alpha-amino acid. |
| | B) | polysaccharide. |
| | C) | triglyceride. |
| | D) | disaccharide. |
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16 | |
Which of the following is a polymer? |
| | A) | Cellulose |
| | B) | Polyethylene |
| | C) | Wool |
| | D) | All are polymers |
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17 | |
Which of the following is not true about benzene? |
| | A) | It is a dark brown liquid in its natural state. |
| | B) | It does not mix with water. |
| | C) | It has a strong odor. |
| | D) | It can be used as a solvent. |
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18 | |
An alkane with 3 carbon atoms would have how many hydrogen atoms in the molecule? |
| | A) | 4 |
| | B) | 6 |
| | C) | 8 |
| | D) | 10 |
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19 | |
The R in R-COOH or R-C=O stands for |
| | A) | a reactive atom. |
| | B) | a separate functional group. |
| | C) | any hydrocarbon group. |
| | D) | the right side of the molecule. |
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20 | |
When wine "goes bad," the ethanol is converted into |
| | A) | CH3COOH. |
| | B) | CH3 OCH3. |
| | C) | CH3CH2OH. |
| | D) | CH3OH. |
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21 | |
Which of the following compounds cannot exist? |
| | A) | C2H3 |
| | B) | C2H4 |
| | C) | C3H8 |
| | D) | C4H10 |
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22 | |
Assuming straight-chain compounds, which of the following will have the highest boiling point? |
| | A) | C3H8 |
| | B) | C7H16 |
| | C) | C11H24 |
| | D) | they all have the same boiling point since each is nothing but carbon and hydrogen |
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23 | |
Fractional distillation |
| | A) | is a basic process used in petroleum refining. |
| | B) | involves heating crude oil and condensing the vapors at different temperatures. |
| | C) | when applied to crude oil can produce such products as gasoline, kerosene, and lubricating oil stock. |
| | D) | all of the above are true. |
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24 | |
Which of the following molecules has the highest carbon to hydrogen ratio? |
| | A) | ethane |
| | B) | ethane |
| | C) | methane |
| | D) | acetylene |
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25 | |
Supporting the idea that the origin of life was the result of natural processes is the fact that |
| | A) | amino acids and other complex organic molecules have been found in meteorites and comets. |
| | B) | in the laboratory amino acids, fatty acids, nitrogen bases, and other compounds can be formed under simulated early Earth conditions. |
| | C) | the early Earth had oceans full of chemicals that may have been interacting to form organic compounds. |
| | D) | all of the above are true. |
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