Question 4.5: Identifying Subatomic Particles Identify the subatomic parti...

Identifying Subatomic Particles

Identify the subatomic particle that has the following characteristics:

a. no charge

b. a mass of 0.000 55 amu

c. a mass about the same as a neutron

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a. neutron            b. electron           c. proton

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Repulsion and Attraction

Tear a small piece of paper into bits. Brush your hair several times, and place the brush just above the bits of paper. Use your knowledge of electrical charges to give an explanation for your observations. Try the same experiment with a comb.

Questions

  1. What happens when objects with like charges are placed close together?
  2. What happens when objects with unlike charges are placed close together?

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