Daily Practice · GCSE Science

Daily Practice - GCSE Science

12th September 1994

5 questions · GCSE · 584 questions in this band

1
Life Cycle Assessment, Recycling and Corrosion
Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
2
Atomic Structure and the History of the Atom
Why is an atom electrically neutral?
3
The Periodic Table: Groups and Trends
Why are the noble gases unreactive?
4
Bonding, Structure and Properties of Matter
State one reason why simple covalent substances such as chlorine have low melting points.
5
Chemical Bonding: Ionic, Covalent and Metallic
Why can an ionic compound conduct electricity when molten or dissolved but not when solid?

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