Relative Atomic Mass

Relative Atomic Mass Quiz

Spec 3.1.2 · Oxford AQA IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. What isotope is used as the standard reference for relative atomic mass?

    • A. Hydrogen-1
    • B. Carbon-12
    • C. Oxygen-16
    • D. Chlorine-35

  2. 2. What is the relative mass of a neutron?

    • A. 0
    • B. Very small
    • C. 1
    • D. 2

  3. 3. Why is chlorine's relative atomic mass 35.5, not a whole number?

    • A. Because electrons add extra mass
    • B. Because it is an average across its isotopes weighted by abundance
    • C. Because chlorine has no neutrons
    • D. Because it is measured incorrectly

  4. 4. What contributes negligible mass to an atom?

    • A. Protons
    • B. Neutrons
    • C. Electrons
    • D. The nucleus

  5. 5. At this level, what are students expected to do with isotopic abundance data?

    • A. Calculate Ar precisely from it
    • B. Understand the concept without calculating Ar from it
    • C. Ignore it completely
    • D. Convert it to mass number

Quiz