Read Separating Solutions p228-229 and take notes for each of the three headings - evaporation, distillation,

Question

paper chromatography

Answer 1

Evaporation:
- Evaporation is a method of separating a solvent from a solute by heating the mixture and allowing the solvent to evaporate and leave behind the solute.
- This method is commonly used to separate salt from saltwater by heating the mixture until all the water has evaporated, leaving behind the salt.
- The rate of evaporation can be increased by increasing the surface area of the mixture, such as spreading the solution out in a thin layer.

Distillation:
- Distillation is a method of separating a mixture of liquids with different boiling points by heating the mixture and collecting the vapors.
- This method is commonly used to purify water by heating the contaminated water and collecting the vapor as it condenses, leaving behind the impurities.
- Distillation is also used in the production of alcoholic beverages and petroleum refining.

Paper Chromatography:
- Paper chromatography is a method of separating and analyzing mixtures of substances based on their different rates of movement through a special paper called chromatography paper.
- This method is commonly used in forensic science to analyze the components of ink and other chemicals found at crime scenes.
- The paper is first coated with a solvent, and then the mixture is spotted onto the paper. As the solvent travels up the paper, the different components of the mixture move at different rates, creating distinct bands of colored spots on the paper.

Answer 2

good

Answer 3

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Answer 4

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Answer 5

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