Κλείστε τη μύτη σας. Ωραίος boy στέκεται σε ημι θέση και διατηρώντας χαμόγελο στο πρόσωπό του, ενώ προσπαθεί να αγγίξει το γυάλινο μπουκάλι - Φωτογραφίες & Εικόνες Αρχείου

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

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

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

Add your reagent. Scared teacher keeping her mouth opened and wrinkling forehead while holding main flask in right hand

Science is fun. Happy boys and a girls smiling while taking part in a practical session held by their chemistry teacher in the school laboratory.

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

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

Involved in the activity. Nice smart thoughtful girls standing around chemical reagents and working with them while being in the laboratory

Successful experiment. Exited smart positive girl looking at the chemical fume and smiling while seeing a chemical reaction

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

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.

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

Under supervision. Charming teenage girl watching her friend pour chemical into the flask and smiling while they having a chemistry class in the lab

So funny. Positive nice girl looking at her sister while playing with her in the kitchen

Childs hands. Selective focus of a hand of the nice cute pleasant girl being in the dough

Dough preparation. Selective focus of eggs in girls hands being added to the dough