Daily Practice
GCSE Science
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16th January 1978
- 1Moles, Formulae and Equations
How many atoms are there in 0.5 mol of helium?
- 2Concentration, Yield and Atom Economy
Convert 250 cubic centimetres into cubic decimetres.
- 3Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 4Reactivity, Acids and Salts
Explain the difference between a strong acid and a concentrated acid.
- 5Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of January 1978, including the monthly compilation PDF.