Ключевые слова: atom, atomic, backgrounds, biology, biotechnology, bond, border, chemical, chemistry, class, connected, connection, direction, dna, element, equipment, experiment, experiments, flat, graphic, icon, illustration, join, lab, medicine, micro, model, molecular, molecule, nautical, nuclear, nucleus, object, particle, pattern, physics, reaction, repeat, research, science, scientific, shape, single, structure, symbol, teach, technology, water,