Question

mixing of iron and sulphur is a............... change whereas heating of iron and sulphur is a......... change​

Answer 1

Answer:

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 sulphur is a physical change. When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and from ferrous sulphide

hope this answer helps you

Answer 2

Explanation:

Chemical and reversible