SCS International is an independent, non-commercial educational reference focused on chemistry, physics, and scientific communication. Its freely readable pages explain complex ideas through clear writing, careful notation, diagrams, and historical context. The site is not affiliated with a company or institution, sells no products, and represents no manufacturer, laboratory, or organisation.

Its chemistry resources cover scientific typography and chemical notation, the structure of the periodic table, and molecular orbital theory, including how atoms share electrons to form bonds. Physics topics include atomic structure, wavefunctions, antimatter, Feynman diagrams, and the fine-structure constant. The online resources also explore scientific illustration and stories from the history of science, including a physicist’s quest to reach Tuva.

Designed for students, teachers, science communicators, and curious general readers, the reference offers standalone articles linked to related subjects. It also points readers to relevant standards bodies and other primary sources, including IUPAC and the Royal Society of Chemistry.