Radioactivity Quiz

Multiple Choice (Choose the best answer.)

  1. Which of the following statements are characteristic of an alpha particle?

    I. It is positively charged. II. It has no mass or charge.
    III. It's symbol is . IV. It has poor penetrating ability.

    I only

    II only

    III only

    I and IV only

    II and IV only

  2. Which of the following statements in problem 1 are characteristic of gamma rays?

    I only

    II only

    III only

    I and IV only

    II and IV only

  3. Which of the following are true about beta decay?

    I. It results in an atom with a smaller atomic number. II. It results in the emission of an electron.
    III. It results in an atom with one less neutron IV. It results in an atom with one more proton.

    I only

    II only

    II and III only

    I, II, and IV only

    II, III, and IV only

  4. undergoes alpha decay. What would be the products of this reaction?

    and

    and

    and

    and

    None of these are correct.

  5. undergoes beta decay. What would be the products of this reaction?

    +

    +

    +

    +

    None of these are correct.

  6. has a half-life of 5730 years how many grams of a 4.0 g sample would be left after 3.5 half-lives?

    1.0 g

    0.50 g

    0.38 g

    0.35 g

    None would be left.

  7. Using the half-life listed above, how many years would it take the 4.0 g sample to decay to 0.25 g?

    4 years

    5730 years

    11700 years

    17200 years

    None of these are right.

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