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9. How does the ratio of mass/volume compare for different objects of the same material?

10 Are these ratios the same? How close do the values need to be for you to consider them as the same value? Why might the values be different?

11. What do the appearances of the liquid droplets indicate about the strength of forces between particles? (In other words, which liquid has the strongest forces, which has the weakest forces?) Explain your reasoning.

Multiple Choice Questions

  • 1)

    When atom A loses an electron to atom B,

    • A)

      atom A becomes more negative than atom B.

    • B)

      atom A acquires more neutrons than atom B.

    • C)

      atom A becomes a positive ion and atom B becomes a negative ion.

    • D)

      atom A becomes a negative ion and atom B becomes a positive ion.

Answer: C

2) When the distance between two charges is reduced by a factor of 2 the force between these charges is

  • A)

    doubled.

  • B)

    quadrupled.

  • C)

    reduced by a factor of 3.

  • D)

    reduced by a factor of 4.

Answer: B

3) A light bulb operating at a voltage of 120 V has a resistance of 200 . What is the power? A) 100 W B) 72 W C) 14 × 10-3 W

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