Has anyone had any inspiration regarding practical ways to teach GC-MS in the new AQA Chemistry 2 spec? For mass spectroscopy I was thinking about trying to deflect ball bearings down a slope wih a magnet. Then progressing to different size ball bearings to represent different size ions and somehow measuring to what extent they are deflected. In my head this will work but in practice I can imagine it will be fiddly to get right, plus there is the potential for ball bearing related carnage in the lab! Unsure on practical ways to tackle the GC part at the moment, but I used one all the time in a previous life so I'm sure something will come to me! Any thoughts appreciated!