Chemistry is a very vibrant subject. It has been defined as the branch of natural science that deals with the composition of substances, their properties and reactions. Chemistry evolved from the medieval practice of alchemy and is often referred to as the central science, as an understanding of chemistry is necessary for a range of other scientific disciplines from Oceanography to Geology. A good grounding in Chemistry will also give you an insight to how real-world phenomena work. The life processes of all organisms involve chemical changes and chemists play a key role in the fields of biochemistry, genetic engineering, nanotechnology, manufacturing, agriculture, drug development, transportation and communication to name but a few. A good chemistry student will be numerate, practical, and analytical, with good problem solving, presentation and communication skills.