Daily Practice

GCSE Science

5th July 1991

5 questions · GCSE · 584 questions in this band

1
Atomic Structure and the Periodic Table
An atom has atomic number 9 and mass number 19. Calculate the number of neutrons.
2
Using Resources
Name two methods of desalinating seawater.
3
Using the Earth's Resources and Potable Water
Classify crude oil as finite or renewable, and justify your answer.
4
Life Cycle Assessment, Recycling and Corrosion
State the two substances that must both be present for iron to rust.
5
Atomic Structure and the History of the Atom
Write the electronic structure of a magnesium atom (12 electrons).

You are looking at an earlier sheet. Today's sheet is the one that adds a day.

Your run is kept in this browser only, and there is no account.

Any date always gives the same five questions, so a sheet can be set again or shared. All of July 1991, including the monthly compilation PDF.