Chemistry is the science that studies matter, its structure, composition, properties and the physical and chemical processes it undergoes, as well as the energy exchanges that accompany these processes.
Matter is understood to be any body that has a mass and a volume. It includes everything from the smallest objects to the largest stars in the Universe.
Chemistry relies on mathematics and physics to describe the processes and is, in turn, the basis of a multitude of sciences such as biology, geology, medicine...
The great breadth of this science makes it necessary to divide it into a multitude of branches, among which stand out: (1) Organic Chemistry, studies the compounds that are based on carbon and hydrogen. (2) Inorganic Chemistry studies compounds that do not contain carbon combined with hydrogen. (3) Analytical Chemistry determines the type and quantity of substances present in a sample. Determining which species are present is known as qualitative analysis, while determining the amount in which they are found is called quantitative analysis. (4) Physical Chemistry studies chemical processes and the energy exchanges that accompany them both from the microscopic (quantum mechanics) and macroscopic (thermodynamics) point of view.