Question

we mix iron filling and sulphur and grind it, and we heat the mixture,a chemical change takes place. using the above example explain the chemical change

Answer 1

ferrous sulphide
when we heat iron fillings and sulphide we get ferrous sulphide...
eg,
magnesium burns in air

Answer 2

Iron and sulphur react to form iron sulphide. Iron sulphide does not show the properties of iron nor sulphur.