Ключевые слова: beaker, bio, biology, boy, chemical, chemist, chemistry, child, childhood, class, concept, discovery, education, elementary, experiment, flask, girl, goggles, group, happy, indoors, junior, kid, knowledge, lab, laboratory, learning, lesson, liquid, people, preteen, primary, protective glasses, pupil, reagent, research, school, schoolboy, schoolgirl, science, scientific, scientist, stem, student, study, studying, test, tube, young,