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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 scientists makes experiment with egg, fire and flask. Chemists set fire to a piece of paper and put it inside the bulb. Little scientist put egg in flask and it slowly moves to the bottom of

Experiments on chemistry at home. Boy pours blue liquid from the beaker into the test tube with a pipette

Chemical experiments for children. Fun experiments for children. Woman makes magic movements with her hand and the blue liquid turns into ice to the surprise of children. Room is filled with artificial smoke.

Chemical experiments for children. Fun experiments for children. A woman conducts cognitive science lessons. Children cover their nose from the unpleasant smell. Bright childrens emotions.

Blood sampling at a medical facility. Blood samples stored in lab tubes for screening.

Chemical experiments for children. The teacher stirs the elastic mixture in a yellow bowl. Fun experiments for children. A woman conducts cognitive science lessons. Fun games for children. Children

Chemical experiments for children. A light smoke rises from a transparent glass beaker . The room is filled with artificial smoke.

Chemical experiments for children. Girl pours ingredients into a transparent dish. Bright emotions of children. Fun experiments for children. A woman conducts cognitive science lessons. Fun games for children. Room is filled with artificial smoke.