The exam is pretty easy guys. You just got to revise the main points.
As for any experiments you done this year, try to also revise a lil on them too incase the paper could ask any practical experiment u done this year.
Overall the exam was easy and can be completed in 1 1/2 hours.
I done the Disasters Option. It wasy easy heh.
UHMWPE is a material used in replacing ball and socket joints like the femur to the hip...it's used because it does not wear away as fast as a super alloy and it reduces friction in the joints being replaced, therefore mimicking the job of cartlige.
it coats the ball part of the arteficial joint and lines the socket inside to REDUCE FRICTION
hope that helps...good luck all...if it isn't too late
i done CSSA and we done that model about valves, it was a simple one where u made the ball and cage valve, or the valve with the flaps, u just had to draw one of those and showed how it works as a valve...such as the main fact that it only lets things go one way