Daily Practice

GCSE Science

29th September 1990

5 questions · GCSE · 584 questions in this band

1
Chemistry Required Practicals and Data Analysis
Name one way to make a rate of reaction experiment more valid rather than simply more precise.
2
Atomic Structure and the Periodic Table
State the relative charge of a neutron.
3
Using Resources
State one benefit of recycling metal rather than extracting new metal from its ore.
4
Using the Earth's Resources and Potable Water
Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.
5
Life Cycle Assessment, Recycling and Corrosion
Explain why steel (an alloy of iron and carbon) is generally harder than pure iron.

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