Daily Practice

GCSE Science

18th October 1990

5 questions · GCSE · 584 questions in this band

1
Chemical Changes
State the name given to a reaction in which a substance loses electrons.
2
Reactivity, Acids and Salts
State what is observed when magnesium ribbon is added to copper sulfate solution.
3
Electrolysis
Aqueous copper sulfate solution is electrolysed using inert graphite electrodes. State the products formed at (a) the cathode and (b) the anode, giving a reason for each.
4
Energy Changes
Explain, in terms of bonds, why breaking bonds is an endothermic process.
5
Exothermic and Endothermic Reactions
On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.

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 October 1990, including the monthly compilation PDF.