Chemistry is the study of matter and energy and the interaction between them. Specifically, it is the science that concerns itself with the properties, composition, and structure of substances (eg elements and compounds), the transformations they undergo, and the energy that is released or absorbed during these processes. Chemistry is everywhere in the world around us, and it is sometimes referred to as the "central science" because it connects other sciences to each other, such as biology, physics, geology, and environmental science. As a fascinating post-16 discipline of study, it is regarded as an excellent preparation for students aspiring to take undergraduate degrees in the sciences, mathematics, engineering, material science, and forensics among others. The Europe Tutorial Academy currently offers pre-university courses in Chemistry for A-level, International Baccalaureate Diploma and Advanced Placement students.