This is information that I expect will come up and we will need for the Ideas and Context in Physics P7May 2012. I cannot guarantee that I have included all the information needed, or that the information listed below will be needed, but it will help with your general knowledge anyway. Good luck!
I haven't had a chance to proof read it, but I hope it makes sense! Keep a look out incase I choose to update it- I might not, but I'll mention below if I have.
Credit to CGP revision guide and BBC Bitesize for some of the information