Daily Practice

GCSE Science

6th October 1992

5 questions · GCSE · 584 questions in this band

1
Chemistry Required Practicals and Data Analysis
Why is a polystyrene cup with a lid used in energy-change experiments?
2
Atomic Structure and the Periodic Table
A sample contains 90% of an isotope with mass number 10 and 10% of an isotope with mass number 11. Calculate the relative atomic mass, to 1 decimal place.
3
Using Resources
Explain why potable water is not the same as pure water.
4
Using the Earth's Resources and Potable Water
State what is meant by sustainable development.
5
Life Cycle Assessment, Recycling and Corrosion
State the two substances that must both be present for iron to rust.

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