Маленький хімік в захисних окулярах перевіряє реакцію в трубці зеленою рідиною - Стокове фото та зображення

Schoolboy watching reaction in tube with green liquid, chemistry lessons

Clever schoolboy adding drops of agent into tube with green reagent, chemistry

Schoolboy looking at red liquid in flask and scratching head, having no idea

Little nerd comparing colorful liquids in flasks watching reaction, chemistry

Boy in protective glasses pouring chemical substance in tube, checking reaction

Boy in protective gloves and glasses studying sediments in flask with red liquid

Chemistry student dripping liquid in test tube conducting experiment in lab

Chemistry student mixing liquids in scientific laboratory, conducting experiment

Female chemist looking at colored liquids in flasks, developing new substance

Female chemist studying presence of sediments in flask with red liquid in lab

Female scientist comparing flasks with colored liquid, detergent laboratory

Chemistry experimenter writing down results of scientific researches in lab