1. Which of the following properties affects the melting and boiling points of
molecules? A. color
B. volume
C. polarity
D. mass
2. Which of the following refers to the temperature at which a solid turns
into a liquid?
A. boiling point
B. melting point
C. solubility D. polarity
3. Which of the following is insoluble in water?
A. sucrose
B. isopropyl alcohol
C. benzene
D. ammonia
4. Which of the following refers to the temperature at which a liquid turns
into a gas?
A. boiling point
B. melting point C. solubility
D. polarity
5. Water and oil will not mix because water is
and oil is
A. polar; nonpolar
B. nonpolar; polar
C. polar; polar
D. nonpolar; nonpolar
6. Which of the following is soluble in water?
A. C2H6
B. CH4 C. HCI
D. C6H14
7. Choose the pair that will not form a solution?
A. water and sugar B. water and ammonia
C. water and alcohol
D. water and margarine
8. What factors describe the polarity of a molecule? A. bond length and molecular size
B. bond polarity and molecular size C. bond length and molecular shape
D. bond polarity and molecular shape
9. Both substances A and B are made up of nonpolar molecules, but A has a greater size and mass than B. Which of the following statements is
true about both substances?
A. Both A and B exhibits London dispersion forces of the same
strength.
B. A has a stronger London dispersion forces than B. C. B has a stronger London dispersion forces than A. D. Neither A nor B exhibits London dispersion forces
10. Which of the following is a polar molecule?
A. CH4
B. CO2
C. H2O
D. BeC12
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Answer:
a b a c a d a a c
Explanation: