What's HOT and What's NOT in the world of Chemistry (or Spot the Difference)

Whenever they change specification (like they did 4 years ago) they always take some stuff out and put other new stuff in. 

There is no good reason why, except to confuse pupils and teachers . So, those of you doing the old specification papers will be very confused from time to time when they ask a question that looks like it is written in greek because you don't recognise the stuff at all or you didn't think you needed to know in that level of detail.
So, to help you through, here is a list of all the changes that come to mind. I may have missed something, so please point in out if there is something else that you think is different.

AS
New In!
Hydrogen Emmission Spectrum
Smart Materials
Carbon Nanotubes
Nanotechnology
Green Chemistry

Gone!
Electron Density Distribution

Equilibrium Constants (now in A2)

A2 

New In!

Hydrogen Fuel Cell

Group 3

Chromatography

Gone!

Group 1 and 2

Hydrogen Emission Spectrum (now in AS)