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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.
(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.