Profesor con alumno haciendo experimento en la mesa en clase de química - Foto e imágenes de stock

Teacher with pupil making experiment at table in chemistry class

Mad professor stares at Bunsen flask with yellow liquid

Mad professor and liquid in the flask in laboratory

Mad professor examines Bunsen flask with yellow water after the experiment in his laboratory

Pop-eyed funny boy after chemical experiment in chemistry lab with fume

Mad scientist is in his laboratory

Cute boy doing biochemistry research in chemistry class

Mad professor rubs his glasses while working in his laboratory

Mad professor sniffs the red liquid in the vial

Teen and teacher of chemistry at chemistry lesson making experiments isolated on white background

Children doing chemical research in laboratory. Dangerous experiment

Children doing chemical research in laboratory. Dangerous experiment

Child doing chemical research in laboratory. Dangerous experiment

Child doing chemical research in laboratory. Dangerous experiment

Emotional child in laboratory after explosion. Dangerous experiment

Smart schoolboy making experiment in chemistry class

Smart schoolboy making experiment in chemistry class

Schoolboy looking through microscope and his classmates at chemistry lesson