Chemistry Knowledge Test
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Questions and Answers

Which scientific discipline does chemistry provide a foundation for understanding at a fundamental level?

  • Biology
  • Physics (correct)
  • Botany
  • Geology
  • What does chemistry study?

  • How to collect DNA
  • Properties and behavior of matter (correct)
  • How medications work
  • Properties of the soil on the moon
  • What does chemistry explain?

  • How environmental pollutants are degraded
  • Plant growth
  • How atmospheric ozone is formed (correct)
  • Formation of igneous rocks
  • Which science is sometimes called the central science?

    <p>Chemistry (D)</p> Signup and view all the answers

    What is the nature of chemical bonds in chemical compounds addressed by?

    <p>Chemistry (A)</p> Signup and view all the answers

    Which equation represents the mole fraction of a constituent, xi, in a mixture?

    <p>$x_i = \frac{n_i}{n_{tot}}$ (A)</p> Signup and view all the answers

    What is the sum of all the mole fractions in a mixture equal to?

    <p>1 (B)</p> Signup and view all the answers

    What is the mole fraction sometimes denoted by instead of a Roman x?

    <p>The lowercase Greek letter χ (chi) (B)</p> Signup and view all the answers

    What is the mole fraction also called?

    <p>The amount fraction (B)</p> Signup and view all the answers

    Which letter does IUPAC recommend using for the mole fraction of mixtures of gases?

    <p>The letter y (B)</p> Signup and view all the answers

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