Question

1. Which methods will you use to separate the following mixtures?
a. water and sugar
b. sand and water
c. sand and salt
2. Name the method by which sedimentation can be made faster.
3. What kind of liquids is a separating funnel used to separate---miscible or immiscible?

Answer 1

Answer:

It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation. The water can also be recovered as well as the salt if the water vapour is trapped and cooled to condense the water vapour back into a liquid. This process is called distillation.

in a mixture of sand and water, the heavier sand particles settle down at the bottom and the water can be separated by decantation. Filtration can be used to separate components of a mixture of an insoluble solid and a liquid.

Distillation is an effective method to separate mixtures comprised of two or more pure liquids. Distillation is a purification process where the components of a liquid mixture are vaporized and then condensed and isolated.

Some of the common methods of separating substances or mixtures are:

Handpicking.

Threshing.

Winnowing.

Sieving.

Evaporation.

Distillation.

Filtration or Sedimentation.

Separating Funnel.

Explanation:

Answer 2

1. a) Ans: The easiest way to separate a mixture of sugar and water is to use distillation, a process that separates substances based on their different boiling points.

1. b) Ans: To separate sand and water distillation is a method used.

• in a mixture of sand and water, the heavier sand particles settle down at the bottom and the water can be separated by decantation.

1. c) Ans: The mixture of sand and salt can be separated by dissolving it in water.

• salt dissolves and sedimentation of sand occurs.
• Sand can then be separated from the liquid by decantation followed by filtration.
• Evaporation of the filtrate separates salt.

2. Ans: Alum is the name of the chemical which is used to speed up the process of sedimentation.

3. Ans: A separating funnel is a funnel that is used to separate immiscible liquids.

• Liquids that do not mix with each other are said to be immiscible.
• Two immiscible liquids, such as oil and water, can be separated by using a separating funnel.