The Mole

The Mole Quiz

Spec 3.6.3 · Oxford AQA IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. How is one mole of a substance defined?

    • A. Its atomic number in grams
    • B. Its relative formula mass in grams
    • C. Its density in g/cm³
    • D. Its boiling point in kelvin

  2. 2. What is Avogadro's constant?

    • A. The number of moles in one gram of any substance
    • B. The number of particles in one mole of any substance, 6.02 × 10²³
    • C. The mass of one mole of hydrogen
    • D. The number of elements in the periodic table

  3. 3. How many moles are there in 32 g of methane, CH4 (Mr = 16)?

    • A. 0.5 mol
    • B. 1 mol
    • C. 2 mol
    • D. 16 mol

  4. 4. What is the mass of 0.1 mol of calcium carbonate, CaCO3 (Mr = 100)?

    • A. 1 g
    • B. 10 g
    • C. 100 g
    • D. 1000 g

  5. 5. A student has 0.5 mol of carbon atoms and 0.5 mol of oxygen molecules (O2). Which statement correctly compares the number of particles present?

    • A. The carbon sample has more particles because carbon is a solid
    • B. The oxygen sample has more particles because O2 molecules are heavier
    • C. Both samples contain the same number of particles, because moles measure amount of substance, not mass
    • D. The number of particles cannot be compared without knowing the density of each substance

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