Daily Practice · GCSE Science

Daily Practice - GCSE Science

31st August 1997

5 questions · GCSE · 584 questions in this band

1
Concentration, Yield and Atom Economy
State two reasons why a percentage yield is less than 100 percent.
2
Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
3
Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
4
Electrolysis
State the name given to the negative electrode in electrolysis.
5
Energy Changes
State whether the combustion of methane is exothermic or endothermic.

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