Ключевые слова: alcohol, art, atom, beaker, burner, chemical, chemistry, color, colorful, contour, danger, equipment, experiment, explosion, fire, flame, flask, formula, glass, glassware, hazard, icon, isolated, laboratory, line, linear, medical, mineral, molecular, molecule, nature, nuclear, number, outline, pop, popart, radiation, radioactive, research, science, scientific, set, structure, symbol, test, toxic, tube, water,