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Daily Practice

GCSE Science

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12th February 1990

5 questions · GCSE · 584 questions in this band

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  1. 1
    Using the Earth's Resources and Potable Water

    Name one method used to sterilise fresh water during the production of potable water.

  2. 2
    Life Cycle Assessment, Recycling and Corrosion

    Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.

  3. 3
    Atomic Structure and the History of the Atom

    Define an isotope.

  4. 4
    The Periodic Table: Groups and Trends

    Explain why potassium is more reactive than sodium.

  5. 5
    Bonding, Structure and Properties of Matter

    State one reason why simple covalent substances such as chlorine have low melting points.

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