What haooens when sulphur and iron are heated?

When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S. Therefore, heating of a mixture of iron and sulphur powder is a chemical change. Solid and molten sulfur can be ignited; burning sulfur produces sulphur dioxide, an irritating, toxic, and suffocating gas. t shows the exothermic reaction of two elements, iron and sulfur, to form the compound, iron sulfide.

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