characterisation notes Energy levels

Question 1

radiowaves

Answer 1

long waves
used in nmr
nuclei flip.
atoms Ms is in two directions - up and down
the difference in energy between spins are equal to a photon.

Question 2

microwaves

Answer 2

rotational
causes heat energy.

Question 3

IF

Answer 3

bonds vibrate in and out
bond stretch
bonds have unique energy

Question 4

visible light

Answer 4

large conjuated chain molecules.
energy levels are close together
excite electrons - makes molecules colourful