Chemistry teacher comparing liquids in flasks and showing to camera, discovery
Contributor: motortion
ID : 272212928
Keywords
classroom, teacher, class, tube, scientific, academic, intelligent, formula, blackboard, analysing, system, study, school, blackboard, smile, cognition, subject, substance, science, research, smiling, student, chemistry, education, scientist, uniform, curiosity, chemical, experiment, reaction, smart, laboratory, sitting, modern, profession, eyeglass, camera, occupation, reform, female, lady, woman, looking, portrait, background, equipment, flask, liquid, sedimentRelated items
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