Ключевые слова: atom, back, board, chemical, chemist, chemistry, class, classroom, college, discussing, education, enjoying, excited, explaining, girl, happy, help, helping, high, learn, learning, lecture, lecturer, lesson, man, mentor, mentoring, model, molecular, molecule, personal, physicist, physics, private, pupil, school, schoolgirl, scientific, scientist, secondary, student, study, studying, teacher, teaching, training, tutor, tutoring, whiteboard,