Daily Practice

GCSE Science

22nd January 1991

5 questions · GCSE · 584 questions in this band

1
Atomic Structure and the Periodic Table
Explain, in terms of electrons, why reactivity decreases going down Group 7.
2
Using Resources
Name the four stages usually considered in a life cycle assessment of a product.
3
Using the Earth's Resources and Potable Water
Explain why potable water is not required to be chemically pure.
4
Life Cycle Assessment, Recycling and Corrosion
Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.
5
Atomic Structure and the History of the Atom
Define an isotope.

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