Practice Quiz

SAT Chemistry - Question List

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16. What term classifies a phase change from a solid directly to a gas?
  1. Vaporization
  2. Deposition
  3. Effervesence
  4. Fusion
  5. Sublimation
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17. Why is Rutherford’s gold foil experiment significant?
  1. It led to the discovery of the electron
  2. It led to the discovery of the nucleus
  3. It led to the discovery of the proton
  4. It led to the discovery of the neutron
  5. It led to the discovery of orbitals
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18. H2S + H2O --> HS- + H3O+

In the reaction above, what is the conjugate base of H2S?
  1. H2O
  2. HS-
  3. H3O+
  4. H2S has no conjugate base
  5. H2S acts as its own conjugate base
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19. What is the oxidation state of chlorine in potassium perchlorate, KClO4?
  1. -7
  2. -3
  3. 0
  4. 3
  5. 7
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20. What is the percentage composition by mass of hydrogen in the compound CH3OH?
  1. 12.6 percent
  2. 9.4 percent
  3. 49.9 percent
  4. 37.5 percent
  5. 74.9 percent
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