Ключевые слова: acid, analysis, background, beaker, bio, biology, biotechnology, black, blue, boil, bottle, bubbles, carbon, chemical, chemist, chemistry, clinical, color, cylinder, danger, dioxide, discovery, drops, drug, equipment, experience, experiences, experiment, flask, glass, glasses, glassware, haze, holding, instrument, lab, laboratory, liquid, medical, medicine, process, protection, reaction, research, science, steam, synthesis, technology, test, tube,