Ключевые слова: acid, atom, background, beaker, biology, biotechnology, blue, chemical, chemistry, concept, design, discovery, doodle, education, element, equipment, experiment, flask, flat, graphic, icon, illustration, lab, laboratory, line, liquid, medical, medicine, microscope, molecule, pattern, physics, plant, reaction, research, school, science, scientific, seamless, skull, smoke, structure, study, symbol, technology, test, tube, university,