Question

iron filings and sulphur were mixed in the dish​

Answer 1

$\small \bold \red{Question}$

• iron filings and sulphur were mixed in the dish???

$\small \bold \red{Explanation}$

• 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