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SHS Chemistry · Year 1

The Concept of the Mole practice questions

Atomic mass units, relative atomic and molecular mass, the mole, Avogadro's constant and molar mass.

25 questions in this topic: 12 recall, 6 applying skills and concepts and 7 strategic thinking. Every one carries a written explanation.

Sample questions

5 of 25 questions in this topic. Sign up to answer them and see the explanations.

  1. Question 1Recall

    One atomic mass unit (amu) is equal to

    • aone twelfth the mass of a carbon-12 atom
    • bthe mass of one electron
    • cthe mass of a hydrogen molecule
    • done gram
  2. Question 2Recall

    The abbreviation Ar is used for

    • arelative atomic mass
    • brelative molecular mass
    • cAvogadro's constant
    • dmolar mass
  3. Question 3Skills & concepts

    Relative atomic mass compares the average mass of one atom to

    • aone twelfth of the mass of one carbon-12 atom
    • bthe mass of a whole mole
    • cthe mass of an electron
    • done kilogram
  4. Question 4Strategic thinking

    How many particles are there in 2 moles of a substance?

    • aAbout 1.2044 x 10 to the power 24
    • bAbout 6.022 x 10 to the power 23
    • cAbout 3.011 x 10 to the power 23
    • dExactly 2
  5. Question 5Recall

    Which element is used as the standard for relative atomic mass?

    • aCarbon-12
    • bHydrogen-1
    • cOxygen-16
    • dHelium-4

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