Ключевые слова: background, blackboard, blue, book, bright, bulb, cabinet, chemical, chemistry, class, closeup, color, colorful, colour, colourful, desk, education, educational, equipment, experience, flask, glass, glasses, glassware, green, group, laboratory, liquid, material, measuring, note, notebook, pencil, reagents, research, science, study, subject, table, teacher, teaching, test, tube, tubes, wooden, yellow,