Chemistry

The only thing smaller than atoms are their subatomic particles; electrons, protons, and neutrons. Not even under a complex microscopic can we view the individual electrons that surround an atom’s nuclei. The Lewis Dot Structure is a visual which represents the outermost shell of electrons, also known as valence electrons, and possible covalent bonds within an atom or molecule.

Units are extremely important in the study of science. Without them, a number is just a number without any meaning. The Système international d’unités (SI system) is a standard that simplifies international scientific communication. This system comprises seven base quantities and 16 prefixes that designate amount.