Ключевые слова: caucasian, chemical, chemist, chemistry, child, childhood, children, cute, development, discovery, dropper, education, elementary, equipment, experiment, flasks, girl, glasses, happy, home, kid, kindergarten, knowledge, laboratory, lesson, lifestyle, liquid, little, looking, medical, person, playing, portrait, preschool, reaction, research, school, schoolgirl, science, scientist, smart, student, study, test, wonder, young,