adult
attention
boy
chemistry
child
class
classroom
clever
compound
contemporary
desk
diligent
discussing
education
equipment
experiment
flask
girl
group
job
knowledge
lab
learner
lesson
occupation
person
profession
protective
pupil
school
schoolboy
schoolchild
schoolgirl
schoolwork
secondary
showing
student
study
subject
substance
supplies
teacher
teaching
teamwork
tweezers
whitecoat
woman
working
workplace