There are five houses. in each house lives a man a certain nationality, who has his favorite drink, he favorite game, and own unusual pets.
there are fives houses in a row, each having a different color.
the englishman lives in the red house. the green house is to the right to the white house.
the italian owns a guppy.
lemonade is drunk in the green house. the swede drinks coffee.
the man who plays backgammon owns a toad
 the man who plays racquetball lives in the yellow house.
the man in the middle house drinks milk.
the russian lives in the first house.
the man next door to the man who plays quoits, own a camel.
the man who owns the rat lives next to the man who plays racquetball.
the man who plays solitaire drinks vodka.
the man who plays charades is an american.
the russian lives next door to the blue house.
with the above information you can discover the answer to the following questions.
  question 1- which man drinks diet soda?
question 2-which man owns a spider monkey ?    

the right is separation by density .

take the blood which is a good example of a heterogeneous mixture.

blood is a vital liquid in our body, which transports oxygen from the air to our lungs so we can breathe. it is also used to eject wastes, such as carbon dioxide, to bring cells and molecules of the immune system to the tissues, and to spread hormones throughout the body. it corresponds to plasma, red blood cells, white blood cells, platelets and hemoglobins combined.

in medical tests centrifugal force is used to separate the different components of the blood.

in general, the centrifugation will allow to separate and analyze the different components of the blood, to know if the rate of white blood cells in the blood of a patient, for example, is normal, and therefore to know if his system immune is integrity.

under the action of centrifugal force, the solid components in the blood are drawn to the bottom of the tube in which the blood is contained. the centrifugal force then acts as an accelerated settling. it separates plasma from red blood cells and white blood cells.