Chemistry
Identify the dispersed phase and dispersion medium in the following examples of colloids :
(a) Fog
(b) Cheese
(c) Coloured gem stones
Answer
(a) Fog
Dispersed phase : Liquid (tiny water droplets)
Dispersion medium : Gas (air)
(b) Cheese
Dispersed phase : Liquid (water droplets)
Dispersion medium : Solid (protein/fat matrix)
(c) Coloured gem stones
Dispersed phase : Solid (metal oxides or impurities giving colour)
Dispersion medium : Solid (the gemstone itself, like silica)
Related Questions
Give an example each for a mixture having the following characteristics :
(a) Two or more coloured constituents soluble in a solvent.
(b) Two immiscible liquids.
Identify colloids from the following :
Copper sulphate solution, milk, smoke, muddy water, butter, sugar solution, face cream, lemonade, jelly, soda water.Which of the following solutions exhibit Tyndall effect, starch solution, sodium chloride solution, tincture of iodine, air.
List three differences between true solutions and suspensions.