Ключевые слова: art, beaker, biology, chemical, chemistry, color, colorful, contour, danger, dioxide, equipment, experiment, explosion, fire, flask, glass, glassware, hazard, icon, isolated, laboratory, line, linear, liquid, medical, microbe, microorganism, nuclear, outline, pharmacy, pop, popart, radiation, radioactive, research, safety, science, scientific, set, so2, structure, technology, test, toxic, tube, virus,