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The branches of science, also referred to as sciences, scientific fields or scientific disciplines, are commonly divided into three major groups: Formal sciences : the study of formal systems , such as those under the branches of logic and mathematics , which use an a priori , as opposed to empirical , methodology .
The following outline acts as an overview of and topical guide to chemistry: . Chemistry is the science of atomic matter (matter that is composed of chemical elements), especially its chemical reactions, but also including its properties, structure, composition, behavior, and changes as they relate to the chemical reactions.
The branches of science, also referred to as scientific fields, scientific disciplines, or just sciences, can be arbitrarily divided into three major groups: The natural sciences (biology, chemistry, physics, astronomy, and Earth sciences), which study nature in the broadest sense;
Colloidal chemistry (5 C, 125 P) Chemistry of construction methods (1 C, 7 P) E. Chemistry education (8 C, 56 P) Chemical engineering (20 C, 79 P)
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
The third shell contains one 3s orbital, three 3p orbitals, and five 3d orbitals, and thus has a capacity of 2×1 + 2×3 + 2×5 = 18. The fourth shell contains one 4s orbital, three 4p orbitals, five 4d orbitals, and seven 4f orbitals, thus leading to a capacity of 2×1 + 2×3 + 2×5 + 2×7 = 32. [30]
[5] [6] Concepts such as the periodicity of the elements and chemical bonds in chemistry are emergent in that they are more than the underlying forces defined by physics. In the same way, biology cannot be fully reduced to chemistry, although the machinery that is responsible for life is composed of molecules. [7]
AFM image of 1,5,9-trioxo-13-azatriangulene and its chemical structure. [3] A molecule is a group of two or more atoms that are held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions that satisfy this criterion.