Arun while doing an experiment in the laboratory, took 3 g of sulphur powder and 5 g of iron filings. He put them on a china dish and heated it till the mixture became red hot and changed into a hard, black coloured substance. Then he let the substance cool and weighed it.
(i) What type of substance is formed at the end of the reaction? What would be its mass?
(ii) Give 3 differences between the properties of the substance formed before heating and the substance formed after heating.
(iii) State the law that is verified in this experiment.
(iv) The product formed contains iron. Will it show magnetic properties? Why?
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