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Introduction to Organic Chemistry

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Introduction to Organic Chemistry Answer Key

1. 
Which element is present in every organic compound?
  1. nitrogen
  2. oxygen
  3. carbon
  4. sulfur
2. 
Which of the following is a hydrocarbon?
  1. propene
  2. ethanal
  3. methanol
  4. butanoic acid
3. 
Which statement correctly describes the molecular polarity of a hydrocarbon?
  1. Hydrocarbons are generally nonpolar because they are asymmetrical.
  2. Hydrocarbons are generally polar because they are asymmetrical.
  3. Hydrcarbons are generally nonpolar because they are symmetrical.
  4. Hydrocarbons are generally polar because they are symmetrical.
4. 
Which statement correctly describes one property of hydrocarbons?
  1. Hydrocarbons will not dissolve in water.
  2. Hydrocarbons have a high boiling point.
  3. Hydrocarbons contain ionic bonds.
  4. Hydrocarbons can contain oxygen atoms.
5. 
Which of the following represents a saturated hydrocarbon?
  1. ethene
  2. butane
  3. propyne
  4. methanol
6. 
What kind of functional group is represented by the image shown below?
Structural Formula - Carboxyl
  1. ketone
  2. aldehyde
  3. ester
  4. organic acid
7. 
Which of the following compounds contains a double bond?
  1. ethane
  2. ethanol
  3. ethyne
  4. ethene
8. 
Which statement correctly describes ethane and butane?
  1. They have only single bonds.
  2. They have the same number of hydrogen atoms.
  3. They have the same number of carbon atoms.
  4. They have only double bonds.
9. 
Explain why pentyne and ethene are unsaturated hydrocarbons.
  • Answers include, but are not limited to, the following:
    • They contain at least one double or triple bond
    • They do not contain all single bonds
10. 
Name one of the functional groups in the organic molecule shown below.
Structural Formula - Carbon Chain Glucose
  • Answers include, but are not limited to, the following:
    • alcohol
    • ketone

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