Daily Practice

GCSE Science

6th June 1990

5 questions · GCSE · 584 questions in this band

1
Biodiversity, Cycles and Human Impact
A peat bog covered an area of 850 hectares in 2015. By 2025, drainage for farmland had reduced the peat bog to 680 hectares. Calculate the percentage decrease in the area of the peat bog.
2
Chemistry Required Practicals and Data Analysis
Name one way to make a rate of reaction experiment more valid rather than simply more precise.
3
Atomic Structure and the Periodic Table
An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
4
Using Resources
Name two methods of desalinating seawater.
5
Using the Earth's Resources and Potable Water
Classify crude oil as finite or renewable, and justify your answer.

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