Question

Mixing of iron filings and sulphur is a physical change but when the mixture is heated, it is a chemical change. Why is it so?​

Answer 1

mixing of iron filling with sulphur is a physical change because we can separate iron filling and sulphur by physical method but when they are heated they form ferrous sulphate (FeSO4) which can't be seperated by physical method so it is characterized as chemical change.

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Answer 2

Answer:

on the first case its a physical change because in this mixture iron can be separated from it by magnetic separation. But in the second case when these substances are heated they form ferrous sulfate (feso4), which again can't be separated into iron and sulphur.

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MARK AS BRAINILIST.