Daily Practice · GCSE Science

Daily Practice - GCSE Science

20th November 1993

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 11 and mass number 23. State the number of protons.
3
Using Resources
Define a finite resource, giving one example.
4
Using the Earth's Resources and Potable Water
Name one method used to sterilise fresh water during the production of potable water.
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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