Separation of Substances

Which of the methods are a part of purifying water

• Sedimentation

• Decantation

• Filtration

• All of the above

In which solution no more solvent can be dissolved

• Unsaturated

• Saturated

• Supersaturated

Which cannot be mixed with water

• Oil

• Salt

• Sugar

The process of settling down of particles of a solid in a liquid is

• Sublimation

• Sedimentation

• Filtration

• Decantation

What is a mixture?

• A chemical combination of two or more different substances.

• A physical combination of two or more different substances.

• A chemically pure substance.

• A special type of solution

what means to cut the crop from the field?

• Threshing

• Winnowing

• Harvesting

• Sieving

Filtration can be used to separate...

• an insoluble solid from a solution
• a soluble solid from a solution
• a dissolved solid from a solution

What is winnowing

• blow a current of air through (grain) in order to remove the chaff.

• a separating process that is used to remove particles of insoluble or undissolved material from a liquid, usually by using a barrier with small to medium-sized holes.

What is handpicking

• substances in a mixture can be separated by just picking them out with the help of hand from the mixture

• a separating process that is used to remove particles of insoluble or undissolved material from a liquid

What is Thersing

• separate grain from (corn or other crops), typically with a flail or by the action of a revolving mechanism.

• a separating process that is used to remove particles of insoluble or undissolved material from a liquid