Daily Practice

GCSE Science

25th April 1992

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
An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
3
Using Resources
Name two methods of desalinating seawater.
4
Using the Earth's Resources and Potable Water
Classify crude oil as finite or renewable, and justify your answer.
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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