Daily Practice · GCSE Science

Daily Practice - GCSE Science

18th April 1998

5 questions · GCSE · 584 questions in this band

1
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
2
Electrolysis
Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
3
Energy Changes
A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
4
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.
5
Bond Energies, Cells and Fuel Cells
State whether forming a new chemical bond requires energy or releases energy.

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 April 1998, including the monthly compilation PDF.