Ключевые слова: acid, alkali, analyze, background, biology, biotechnology, book, bright, bulb, calculations, chemist, chemistry, color, colorful, development, discovery, equation, equipment, exercise, experiment, flask, formula, glass, glasses, glassware, gray, grey, industry, lab, liquid, medical, medication, medicine, pharmaceutical, pharmacology, pharmacy, reagents, research, sample, science, technology, test, testtube, tube, water,