 This particular video is just giving you a very quick overview of the procedures required to safely handle and dispose of organic substances. Now the best way to identify or discuss safety is to actually have a look at some of the information that we are regularly given when we look at our risk assessments. So I hope you've had a chance to play with risk assess because it is a great program for giving you lots of information, very quickly about a range of different compounds. Now safety issues are related to handling and disposal. And we need to make sure that when we're assessing any chemical we're considering both of these together. It is very possible that you may be asked questions around identifying and mitigating risks when you're carrying out chemical procedures. And in order to do that, we need to move away from what we might expect you to know as a year seven student. So wearing safety glasses is something I would expect year seven to be able to tell me, likewise not drinking chemicals. So therefore I would expect students in the senior years to have a little bit more specific knowledge. And of course, so will your examiners. In addition to that, there are a range of different organic compounds that we can use to demonstrate a range of different properties, both physical and chemical, but we need to make choices about what we're using in order to ensure that we are maintaining our highest possible levels of safety.