29. The reason that fats contain more energy than simple sugars, is fats have many more
A.carbon atoms
B.hydrogen atoms
C.covalent bonds
D.hydrogen bonds

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30. The main difference between an acid and a base is that
A.bases are polar molecules and acids are not
B.acids are polar molecules and bases are not
C.bases donate hydrogen ions in water while acids accept hydrogen ions
D.acids donate hydrogen ions in water while bases accept hydrogen ions

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31. Which of the following will easily dissolve in a polar solvent?
A.gasoline (heptanes & octanes)
B.methane
C.argon
D.sodium chloride

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32. The elements oxygen, nitrogen, and carbon
A.can all form covalent bonds with other elements
B.contain protons and neutrons in their atomic nuclei
C.are common elements in the molecules that make up living organisms
D.All of the above

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