Question

When iron and sulphur are heated together a grey mass is formed which is attracted byy a magnet. true or false​

Answer 1

Answer:

False

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). It is a new substance which has properties entirely different from Fe and S.Therefore, heating of mixture of iron and sulphur powder is a chemical change.

Behaviour towards a magnet---Iron filings cling to magnet.No particle attaches to magnet.