Search over 10,000 free study notes

Simultaneous equations are equations that have one or more unknown values. There are a multitude of ways to solve simultaneous equations, however the elimination method is the most common at GCSE level maths...

Reactions can be explained in terms of loss and gain of electrons. Oxidation is Loss of electrons and Reduction is gain of electrons. When electrons are lost oxidation number increases, whereas reduction lea...

Unsaturated carbon chains contain one or more C-C double bonds. Due to the C-C double bonds, the chain is kinked which means it is not able to pack regularly which results in a lower melting point.

Diffusion is the movement of a substance from an area of high concentration to an area of low.For example, imagine spraying a deodorant can. The substance coming out of the can is at high concentration and o...

To work out an oxidation state of an atom you need to assign the electrons on the atoms outer shell to the most electronegative atom.O>N>C>H. Electrons in the outer shell of two of the same atoms ar...