Explain the following term:

Supernatant liquid

Explain the following term:  

Decantation

Explain the following term:

Distillation

Explain the following term:

Sublimation

Identify homogeneous mixture and heterogeneous mixture from the following list:

a. Common salt

b. A mixture of sand and salt

c. Milk

d. Brass

e. Gun powder (mixture of nitre or potassium nitrate, charcoal and sulphur)

f. Chocolate bar

g. Cooked vegetables of peas and cauliflower

 h. A mixture of iron foil and sulphur

 i. Ammonium chloride and salt

j. Limestone

Describe a method to separate the following mixtures:

Pieces of paper and wheat

Describe a method to separate the following mixture:

Water and mud

Describe a method to separate the following mixtures:

Sugar and water

Describe a method to separate the following mixtures:

Salt and sand