Daily Practice

GCSE Science

6th December 1990

5 questions · GCSE · 584 questions in this band

1
Concentration, Yield and Atom Economy
Convert 250 cubic centimetres into cubic decimetres.
2
Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
3
Reactivity, Acids and Salts
Explain the difference between a strong acid and a concentrated acid.
4
Electrolysis
Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
5
Energy Changes
State whether the combustion of methane is exothermic or endothermic.

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