Ключевые слова: atmosphere, atom, atomic, atoms, biochemistry, blue, chemical, chemistry, cold, composition, compound, concept, cryogenic, cryotherapy, dermatology, dinitrogen, drawing, earth, education, element, elemental, fertilizer, flask, flat, form, formula, frostbite, gas, icon, illustration, isolated, line, liquid, luquid, medical, model, molecular, molecule, n2, nitrate, nitrogen, periodic table, pharmaceutical, refrigerant, science, scientific, sickness, structure, wart,