Water, pH and Macromolecules – Section 1

31. Which of the following will easily dissolve in a polar solvent?

A. gasoline (heptanes & octanes)
B. methane
C. argon
D. sodium chloride

Correct Answer: D. sodium chloride

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

Correct Answer: D. All of the above

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