What will happen when iron fillings are heated with sulphur powder? Write observations. Give two properties of the substance formed. Is it compound or mixture?
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When iron filings and sulphur powder are mixed, both retain their properties. It means they have not undergone any chemical reaction. Therefore, mixing of iron and sulphur is a physical change.
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 mixture of iron and sulphur powder is a chemical change.Mixture of iron filings and sulphur powder forms compound FeS on heating.
Compound FeS does not show any reaction on heating.
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 mixture of iron and sulphur powder is a chemical change.Mixture of iron filings and sulphur powder forms compound FeS on heating.
Compound FeS does not show any reaction on heating.
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