Chemistry Part 2

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Anonymous
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272749
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Chemistry Part 2
Updated:
2014-05-01 18:13:29
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part 2
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  1. Carbon -12 and carbon- 14 are isotopes. What do they have in common?
    A. Number of nuclear particles
    B. Number of neutrons
    C. Mass number
    D. Number of protons
    D. Number of protons
    (this multiple choice question has been scrambled)
  2. A substance with a pH of 3 is how many times more acidic than a substance with a pH of 5?
    A. 8
    B. 2
    C. 100
    D. 1,000
    C. 100
    (this multiple choice question has been scrambled)
  3. Radioactive isotopes are frequently used in medicine. What kind of half-life would a medical isotope probably have?
    A. Many years long
    B. Year long
    C. Seconds long
    D. Days long
    D. Days long
    (this multiple choice question has been scrambled)
  4. When an acid is added to a base, water and a salt form. What kinds of bonds form in these two compounds?
    A. Liquid and metallic
    B. Polar and nonpolar covalent
    C. Polar covalent and ionic
    D. Ionic only
    C. Polar covalent and ionic
    (this multiple choice question has been scrambled)
  5. Al(NO3)3 + H2SO4 --> Al2(SO4)3 + HNO3 is an example of which kind of reaction?
    A. Single replacement reaction
    B. Decomposition reaction
    C. Synthesis reaction
    D. Double replacement reaction
    D. Double replacement reaction
    (this multiple choice question has been scrambled)
  6. B, Si, As, Te, At, Ge, and Sb form a staircase pattern on the right side of the periodic table. How can these elements be classified?
    A. As semimetals
    B. As ultrametals
    C. As metals
    D. As nonmetals
    A. As semimetals
    (this multiple choice question has been scrambled)
  7. If gas A has four times the molar mass of gas B, you would expect it to diffuse through a plug _____
    A. at a quarter the rate of gas B
    B. at half the rate of gas B
    C. at twice the rate of gas B
    D. at four times the rate of gas B
    B. at half the rate of gas B
    (this multiple choice question has been scrambled)
  8. Which of the following is not an allotrope of carbon?
    A. Buckminsterfullerene
    B. Fluorine
    C. Diamonds
    D. Graphite
    B. Fluorine
    (this multiple choice question has been scrambled)

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