Question

give reason why mixture of Sulphur and iron cannot be separated by magnet after it is heated​

Answer 1

Answer:

1. heating the mixture to a very high temperature enables the molecules of iron to chemically react to the molecules of sulfur to create a new compound i.e iron sulfide (FeS) and this new compound does not show magnetism like an iron molecule does.

2. heating to a certain temperature (it's called curie point) iron loses its magnetism and it will no longer be attracted by the magnet. Hence we wont be able to separate iron from sulphur

Explanation: