Daily Practice · GCSE Science

Daily Practice - GCSE Science

Biology, chemistry and physics recall, definition and calculation, drawn from every strand.

12th May 2022

5 questions · GCSE · 584 questions in this band

1
Concentration, Yield and Atom Economy
Convert 250 cubic centimetres into cubic decimetres.
2
Chemical Changes
A student reacts 2.4 g of magnesium with excess dilute hydrochloric acid: Mg + 2HCl -> MgCl2 + H2. Relative atomic mass of Mg = 24. Calculate the number of moles of hydrogen gas produced.
3
Reactivity, Acids and Salts
Explain the difference between a strong acid and a concentrated acid.
4
Electrolysis
Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
5
Energy Changes
A reaction profile shows the reactants at 220 kJ and the products at 340 kJ. 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.

Every sheet is deterministic: the same date always regenerates the same five questions. All of May 2022, including the monthly compilation PDF.