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 Form 3 Chemistry Paper 1 Sample Revision Questions With Answers

Metal Z burns in air with a brilliant blinding white flame. One of the products formed dissolves in water to form an alkaline solution and a gas that turns a wet red litmus paper to blue.
a).Identify
i).The products formed when the metal Z burns in air.
ii).The gas produced when the product formed dissolves in water.
b). Write the equation for the formation of the gas.

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Answer Text:
a).i).Magnesium nitride and magnesium Oxide.
ii).Ammonia gas
b).#Mg_3N_(2(s)) + 6H_2O_(l) --> 6Mg(OH)_(2(aq)) + 2NH_(3(g))#


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