Question

Sample X is a mixture of iron and sulphur on separately heating sulphur in excess of,Y is formed. State the nature of mixture X and Y

Answer 1

Nature of mixture x is acidic (iron sulphate)

Nature of mixture U is basic oxide (iron oxide with the evolution of So4)

Answer 2

AIM

To prepare

(a) a mixture

(b) a compound using iron filings and sulphur powder and distinguish between these on the basis of:

appearance, i.e. homogeneity and heterogeneity

behaviour towards a management

behaviour towards carbon disulphide (a solvent)

effect of heat

MATERIALS REQUIRED

China dish, tripod stand, wire gauze, iron filings, sulphur burner, test tube stand and test tube holder.

THEORY

Formation of mixture is a physical change while formation of compound is a chemical change. Mixture may be homogeneous or heterogeneous while compounds are always homogeneous. In a mixture, components retain their individual properties while the components of a compound lose their individual properties. The components of a mixture can be separated by physical methods while the components of compounds cannot be separated by physical methods.