Question

When we mix iron filings with sulfur and grind it, a physical change takes place. However, if we heat the mixture, a chemical change takes place. Explain why the former is said to be a physical change while the latter process is said to be a chemical change?

Answer 1

A physical change is a reaction which is reversible .When we mix iron fillings with sulphur then we can separate it manually because they both are in solid form but in the case of the latter reaction we heat the mixture and it reacts with the atmosphere and forms a compound which can't be reversed into its previous state.
thus latter one is a chemical change.

Answer 2

Answer:

this is your answer guys