Kinderen doen chemisch onderzoek in het laboratorium. Gevaarlijk experiment - Stockfoto’s en -afbeeldingen

Children doing chemical research in laboratory. Dangerous experiment

Children doing chemical research in laboratory. Dangerous experiment

Schoolchild making experiment at table in chemistry class, closeup

Teacher and student scientists in protective glasses making experiment in lab

Two schoolchildren in white gowns watching chemical experiment in lab

Schoolchild making experiment at table in chemistry class

Teacher and pupils at chemistry lesson in classroom

Smart pupils making experiment in chemistry class

Smart pupils making experiment in chemistry class

Teacher with pupils making experiment in chemistry class

Smart pupils making experiment in chemistry class

Smart pupils making experiment at table in chemistry class

Teacher with pupil making experiment at table in chemistry class