Analysising Substances Flashcards
1
Q
Examples of Instrumental methods
A
Gas Chromatography-Mass spectroscopy
(GC-MS)
Mass spectroscopy
2
Q
Advantages of Instrumental methods
A
- accurate
- sensitive
- rapid
- Useful when the amount of a sample is very small e.g. urine sample.
3
Q
Uses of Paper chromatography
A
Used to identify additives in foods.
Artificial colours can be detected.
Uses solubility of a compound to separate compounds (more soluble compounds will be further up the paper).
4
Q
Why is a pencil use in paper chromatography?
A
as it does not smudge.
