Chemistry Paper 2 Flashcards
1
Q
What is the process of treating waste water?
A
-screening and grit removal
-primary seditarion ranks
-separation
-final settling tanks
-sludge treatment
-burners
2
Q
What is chromatography?
A
Chromatography is the separation technique used to help identify substances. It works as some substances are more soluble than others so travel further in the mobile phase.
3
Q
Why do you draw the line in pencil?
A
So the ink does not move up the chromatography paper.
4
Q
How do you work out the retention factor?
A
Distance moved by spot (cm) divided by distance moved by solvent (cm)
5
Q
What is group 7?
A
