Search over 10,000 free study notes

2K(s) + 2H 2 O(l) = 2KOH(aq) + H 2 (g) Potassium (K) is a group 1 metal, which is a solid. Water (H 2 O) reacts with Potassium to form Potassium Hydroxide (KOH) and Hydrogen (H 2 ). Hydrogen exists naturally...

The basic principle about chemical reactions is that whatever goes in one end, will undoubtedly come out the other! The simplest way to make sure your reactions are correct is to count what you have on each ...

Case studies will form the backbone of your Geography GCSE. It is worth creating a short summary for each case study you cover throughout the year. That way when you come to revision they are in a format tha...

Biology GCSE like any other requires a basic level of understanding, but in addition it requires you to use scientific terminology. By using specific words or descriptions in your answers you make it easier ...

Source based paper's are often what student's find the most difficult despite the fact that most of what they need to know is in front of them. When answering a source based question a little bit of extra kn...