Medium Shot Of Young Chinese Female Researcher Standing At Table With Retort On Stand In Laboratory Looking At Purple Solution Observing Chemical Reaction And Filling Out Checklist On ClipboardÂ
Medium vertical of young Chinese postgraduate student looking at purple solution in retort on stand in laboratory, checking for reaction or residue, writing in checklist on clipboard
Mixing of alkali and phenolphthalein solution, chemical reaction. The test tube is close-up
Abstract visualization of chemical reaction. Motion. Mixed solutions creating spreading stains.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Chemical reaction. Stock footage. Small test tubes are tested with special solutions that boil.
Adding solution into flasks with blue mixtures in stand close-up. Modern laboratory concept. Chemistry reaction and experiments, chemical researching.
Interaction of an alkali solution with an acid solution. Neutralization reaction. The color of phenolphthalein disappears. A plan of the mountains
The interaction of zinc with a solution of sulfuric acid. Isolation of molecular hydrogen. Chemical reaction on a black background. The test tube
Close up of male scientist in disposable coveralls, goggles, respirator mask and gloves holding flask and observing chemical reaction
children's science. children mix chemical reagents and observe the reaction.
Scientist working with chemical reaction in chemistry lab. Chemical reaction in glass flask. Lab worker doing chemical experiment in laboratory. Researcher use pipette to drop liquid in glass flask
Abstract visualization of chemical reaction. Motion. Mixed solutions creating spreading stains.