Question

heating the mixture of iron and sulphur is chemical or physical change.
Please explain​

Answer 1

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What haooens when sulphur and iron are heated?

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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.

Answer 2

Heating the mixture of iron and sulphur is chemical change.

• Iron and sulphur both have different properties. When they are heated they form ferrous sulphide or FeS.
• FeS has different properties from iron and sulphur.
• The reaction is

$Fe+S\rightarrow FeS$

• So, heating of Fe and sulphur give a new product ferrous sulphide so, this reaction is a chemical change.