Chemistry (scholarship)

Question 1

GC-MS?

Answer 1

gas chromatography with mass spectroscopy

Question 2

Bioassays

Question 3

Chemistry methods in chemical ecology

Answer 3

collection
isolation
identification
confirmation

Question 4

pyridine

Answer 4

solvent
C₅H₅N

Question 5

derivatisation

Answer 5

a chemical reaction that changes the structure of a compound to improve its performance in analytical chemistry. It’s used in a variety of techniques, including gas chromatography

Question 6

Gas chromatography

Answer 6

-carrier gas has no interaction with the analytes
-separation is primarily based on booking point
-common detectors are Flame ionisation detector (GC-FID) or Mass Spectrometer (GC-MS)

Question 7

hydrocarbons

Question 8

aldehydes

Question 9

dichloromethane

Question 10

retention indices

Question 11

retention time

Question 12

polar vs non polar

Answer 12

Polar = Electrons are shared unequally between atoms, resulting in a molecule with a positive and negative end.
Non-Polar = Electrons are shared equally between atoms, resulting in a molecule with no charge

Question 13

volatility

Answer 13

The volatility of a substance is how easily it is converted to a gas

Question 14

elute

Answer 14

wash out or extract