Practice Quiz

CLEP Chemistry Practice Test - Question List

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16. The average distance between molecules always increases during which of the following phase changes?
  1. gas to solid
  2. liquid to gas
  3. gas to liquid
  4. liquid to solid
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17. Which of the following ideas was proposed by Niels Bohr?
  1. Electrons occupy specific energy levels within an atom.
  2. The nucleus of an atom contains neutrons as well as protons.
  3. An atom is a solid sphere that cannot be separated into smaller parts.
  4. An atom consists of negative charges embedded in a positively charged sphere.
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18. Carbon reacts with chlorine to form CCl4. What is the name of this compound?
  1. carbon 4-chloride
  2. 1-carbon 4-chloride
  3. tetracarbon chloride
  4. carbon tetrachloride
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19. A walk-in cooler has a volume of 1.1 X 104 L. If the temperature inside the cooler is 3°C and the gas pressure is 1.0 atm, how many moles of gas are inside the cooler?
  1. 4.9 X 102 mol
  2. 4.5 X 104 mol
  3. 2.5 X 105 mol
  4. 6.0 X 1023 mol
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20. Aluminum (Al) has three electrons in its outer shell. Oxygen (O) needs two electrons to complete its outer shell. What is the chemical formula for aluminum oxide?
  1. AlO
  2. AlO2
  3. Al2O2
  4. Al2O3
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