With the concept of general chemistry principles are referred to the chemicals that play a role in all areas. In chemistry, unlike the other natural sciences the term is used in general chemistry to bring the presence and relevance of chemical knowledge for the understanding of the entire chemical expression. In chemistry, it is a necessary prerequisite is a minimum of understanding of the structure of atoms, the properties of the various chemical bonds in molecules, the basic behavior of acids and bases and the different concepts of oxidation and reduction have to be chemical in the incorporated areas of expertise to be able to. The General Chemistry is always the beginning and the entry into any other chemical employment field.

The General Chemistry is the basis, and describes the basic concepts of the entire chemistry, eg the structure of the atom, the periodic table of elements, chemical bonds, the basis of stoichiometry, acids, bases and salts as well as chemical reactions such as redox reactions. Atoms, for example, the basic building blocks of matter - in other words they are the smallest unit into which one can decompose the matter with chemical and mechanical means. The term comes from the Greek Atomic Energy and means the Unzerschneidebare. At the beginning of the 20th Century, scientists discovered then that there are atoms from an atomic shell, which is made up of electrons and a nucleus. Electrons are bound in consequence of the electromagnetic interaction of the atomic nucleus.

The nucleus consists of protons, which are positively charged and neutrons, which are uncharged. The electromagnetic interaction it enables continue to enter that bind atoms together, and so chemical compounds. For this reason, atoms that have the same number of electrons are grouped in one item. In the periodic table of elements all the chemical elements with increasing nuclear charge or atomic number and by their chemical properties and main-group and transition periods are classified and presented. The periodic table is now primarily an overview.

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