Ключевые слова: acid, alkaline, analysis, barrel, base, bottle, chemical, chemistry, color, container, corrosive, danger, death, discovery, education, environment, equipment, experiment, field, flammable, glass, hazard, icon, industry, lab, label, laboratory, liquid, object, poison, radiation, reaction, research, risk, safety, sample, science, set, sign, solution, substance, symbol, tag, test, tool, toxic, tube, warning, water,