Ключевые слова: change, changes, chemistry, closeup, disciplines, droplet, dropping, education, elevated view, experiment, falling, high angle view, indoors, laboratory beaker, laboratory equipment, liquid, medicine, medicines, natural science, no people, nobody, numeral, orthographic symbol, ph, physical science, pipette, purple, research, science, scientific equipment, september 2016 release, studio shot, symbol, test,