Daily Practice

GCSE Science

1st November 1961

5 questions · GCSE · 584 questions in this band

1
Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
2
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
3
Electrolysis
Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
4
Energy Changes
State whether the combustion of methane is exothermic or endothermic.
5
Exothermic and Endothermic Reactions
State what is meant by the activation energy of a reaction.

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