Flashcards on Chromatography and Separation Techniques
Chromatography and Separation Techniques: A Student Guide
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Paper Chromatography and Separation Techniques
15 cards
Card 1
Question: What is chromatography used for?
Answer: To separate substances in a mixture.
Card 2
Question: What must a substance be for chromatography to work?
Answer: Soluble in a solvent.
Card 3
Question: What does the word 'chrome' come from and what does it mean?
Answer: From Greek 'khroma', meaning colour.
Card 4
Question: Who first used the term chromatography and when?
Answer: Russian botanist Mikhail Tsvet in 1906.
Card 5
Question: Name three separation techniques mentioned besides chromatography.
Answer: Filtering, evaporating, and distillation.
Card 6
Question: What is the first step when doing paper chromatography in this method?
Answer: Place a small amount of solution in a beaker.
Card 7
Question: What do you draw on the chromatography paper before adding spots?
Answer: A pencil line.
Card 8
Question: How should the spots of the substance be placed on the paper?
Answer: On the pencil line and spaced apart.
Card 9
Question: How is the paper positioned in the beaker for chromatography?
Answer: Paper is placed with the pencil line at the bottom so the solvent can travel up.
Card 10
Question: What happens as the solvent moves up the paper?
Answer: The dyes (or substances) begin to separate out.