Ключевые слова: analyzing, beaker, biology, blackboard, bottle, boy, bulb, chemist, chemistry, child, childhood, classroom, clever, desk, discovery, education, equipment, experiment, flask, formula, girl, glass, gloves, gown, kid, knowledge, lab, laboratory, lesson, liquid, little, microscope, mixture, person, practise, research, school, schoolboy, schoolgirl, science, scientific, scientist, smart, student, study, test, three, tube, white, young,