Νεαρός χημικός λειτουργεί στο εργαστήριο. Το αγόρι στο προστατευτικά γυαλιά αναμιγνύει πορτοκαλί υγρό στη φιάλη. Πειράματα στο εργαστήριο χημείας. - Πλάνα & Βίντεο Αρχείου

Young chemist works in laboratory. The boy in protective glasses looks at the chemical flasks with liquid. Cute boy touches bulb with orange liquid. Chemical experiments in laboratory.

KAZAN, TATARSTAN RUSSIA - APRIL 24 2018: Chemical laboratory with different glassware and blond girl lab assistant pours transparent liquid into small glass making sample pink on April 24 in Kazan

Young female chemist doing science experiment with chemicals

Young chemist works in laboratory. The boy in protective glasses looks at the chemical flasks with liquid. Cute boy touches bulb with orange liquid. Chemical experiments in laboratory.

Scientist prepares to experiment in laboratory. The woman sets the flasks on the special stand before the experiments.

Cute boy strews a starch on a fire in laboratory. Suddenly the fire flashes. Young chemist discovers world of chemistry for himself and makes chemical experiments in the laboratory.

Young scientist makes chemical experiments with colorful liquid. Hes holding flask with pink liquid in hands and research it. Laboratory experiments with liquid.

Laboratory assistant and his pupil makes chemical experiments with dry ice. They holding flasks with colorful liquids in hands. The flasks is steaming and young scientists looks after the reaction of

Laboratory assistant and his pupil makes interesting laboratory experiments with dry ice and colorful liquid. People researches the reaction of dry ice on the acid. The boy is touching his head and