Daily Practice

GCSE Science

1st January 1992

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 11 and mass number 23. State the number of protons.
4
Using Resources
Define a finite resource, giving one example.
5
Using the Earth's Resources and Potable Water
Name one method used to sterilise fresh water during the production of potable water.

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