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(a) Candle wax is mainly a compound consisting of two elements. Name the two elements
(b) The set up below was used to investigate the burning of a candle. Study it and answer the questions that follow.
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(i) What would happen to the burning candle if the pump was turned off? Give reasons.
(ii) State and explain the changes in mass that are likely to occur in tube N by the end of the experiment.
(iii) Name two gases that come out through tube M
(iv) What is the purpose of calcium chloride in tube L?
(v) Name another substance that could be used in the place of calcium oxide in tube N.