Flashcards
1.3, 1.4: Separating Mixtures
Cards in this deck (8)
- 1What is the difference between a compound and a mixture?A compound is joined by a chemical bond whilst a mixture is not
- 2List some methods of separating.• sieving
• filtrating
• distillation
• evaporation
• chromatography - 3Define: a) miscible liquids b) immiscible liquidsa) liquids that do dissolve into each other- often separated using fractional distilling
b) liquids that do not dissolve into each other- for example, oil and water - 4What is fractional distilling?• an effective way of separating miscible liquids using a fractional column.
• this is possible because of the different boiling points of the liquids in the mixture - 5What is the difference between simple and fractional distillation?• simple distillation is used when the substances have a significant difference in boiling points
• whereas if the boiling points of the two liquids in the mixture are close, fractional distillation is more efficient - 6What is paper chromatography?separates mixtures of substances dissolved in a solvent as they move up a piece of chromatography paper
- 7Why does chromatography work?The different substances are separated because of their different solubilities in the solvent used.
- 8Where is chromatography used?It is used in the food industry and forensic science.
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- User has deleted their subject information Flashcards on 1.3, 1.4: Separating Mixtures, created by Deleted user on 12/03/2018.
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- Created by Farha Idrees · Nov 27, 2016
- Copied by Farha Idrees · Mar 12, 2018
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