Στη μέση του πειράματος. Ωραία μελαχρινή θετική αγόρι κρατάει μια χημική φιάλη και βήχα ενώ διεξάγουν ένα πείραμα με τον φίλο του - Φωτογραφίες & Εικόνες Αρχείου

In the middle of experiment. Nice brunette positive boy holding a chemical flask and coughing while carrying out an experiment with his friend

Controlling the experiment. Nice experienced male teacher standing in the classroom and controlling the experiment while having a chemistry lesson

Having fun. Delighted curious positive children standing around the table and mixing chemical reagents while conducting an experiment

Scientific research. Nice cheerful attractive woman holding a chemical flask and smiling while wearing a white coat

Scientific research. Nice cheerful attractive woman holding a chemical flask and smiling while wearing a white coat

Constant supervision. Beautiful intelligent nice teacher looking at her students and taking notes while having a chemistry lesson

Work in team. Shocked woman wrinkling her forehead and keeping mouth opened while trying to stop the experiment

Future scientists. Happy boys standing in the laboratory and holding a fuming vacuum flask while working on a school project during a chemistry lesson.

Good day. Positive delighted girl closing her eyes and keeping smile on her face while raising left hand

Catching the fume. Positive pretty nice girl looking at her hand and smiling while having fume in it

Fascinated by the experiment. Delighted positive cute girls smiling and being surrounded by chemical smile while watching the chemical experiment

Chemical reaction. Selective focus of a chemical flask filled with liquid and being held by a professional mala scientist while conducting the experiment

Right reaction. Two cheerful teenage schoolgirls holding flasks with chemical substances and checking them for the desired chemical reaction in them

So you said you want to smell it. Professional chemist holding a fuming laboratory flask and entertaining excited kids during a chemical experiment in the laboratory.

Pleasant conversation. Charming teenage girl talking to her friend during the chemistry class while holding a big flask with a red liquid

Touch it, touch it. Group of little scientists having a good time and enjoying a chemistry lesson with their female teacher entertaining them during the practical session.