Ключевые слова: analysis, brown liquid, chemical experiment, chemical reaction, chemical tools, chemistry, clear liquid, dark, dark background, dark liquid, evaporation, experiment, experiment tools, experimentation, glass, gray, holder, investigation, lab equipment, lab tools, laboratory, laboratory equipment, liquids, medical experiment, medical research, medical tools, mystery, orange liquid, process, reaction, research, research tools, science, scientific, scientific experiment, scientific research, scientific tools, smoke, stand, test tubes, testing, tubes, wood, wooden base, yellow liquid,