Ключевые слова: abstract, atom, atomic, black, button, chemical, chemistry, circle, color, content, core, electron, emblem, energy, icon, icons, logo, medicine, model, molecular, molecule, neutron, nuclear, nucleus, orbit, particle, physics, png, power, proton, research, science, scientific, sign, sphere, star, structure, symbol, tag, technology, transparent, ui, uix, user interface,