Chromatography Flashcards
(6 cards)
1
Q
What is Chromatography used for?
A
It’s used to separate a mixture of substances (colours). Different compounds have different solubilities as they travel at different rates
2
Q
What is a chromatogram?
A
It’s when there is a chromatography paper with a coloured or not coloured spot
3
Q
What happens when no separation of colour is seen?
A
The substance is pure
4
Q
When are different solvents used?
A
- Solvent is usually water
- Ethanol solvent is used with plants
5
Q
What happens when the solute is able to dissolve a lot in the solvent?
A
The further it will travel up the chromatography paper
6
Q
What happens if the spots are colourless?
A
The chromatogram can be exposed to a substance called a locating agent
