Question

why we are taking a mixture of Fe filings and S powder not an Fe bar and block of S??​

Answer 1

Explanation:

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).

Answer 2

Answer:

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