Chemistry is the clinical subject worried with factors and compounds composed of atoms, molecules and ions: their composition, shape, houses, behavior and the adjustments they undergo at some point of a response with other substances.

In the scope of its task, chemistry occupies an intermediate function amongst physics and biology. it is every now and then referred to as the valuable science because it offers a basis for know-how every fundamental and executed clinical disciplines at a crucial stage. for example, chemistry explains factors of plant chemistry (botany), the formation of igneous rocks (geology), how atmospheric ozone is shaped and how environmental pollutants are degraded (ecology), the residences of the soil on the moon (astrophysics), how drug treatments paintings (pharmacology), and a manner to build up DNA evidence at a criminal offense scene (forensics)