Daily Practice

GCSE Science

30th January 1986

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
State what is observed when magnesium ribbon is added to copper sulfate solution.
3
Electrolysis
Explain why solid sodium chloride does not conduct electricity, but molten sodium chloride does.
4
Energy Changes
State whether the combustion of methane is exothermic or endothermic.
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.

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