Chemical Reaction Stages: Gas Collection and Flame Test Demonstration #2146857 (License: Personal Use)

The image depicts a sequential chemistry demonstration: (1) a reaction begins in a flask with a green catalyst or reactant, (2) gas evolves and displaces water in an inverted collection flask while a flame test is performed at the top, and (3) the collected gas is ignited, producing a visible flame and smoke plume. Each stage uses water displacement to capture evolved gases, commonly used for hydrogen, oxygen, or methane identification.

Used in high school or undergraduate chemistry curricula to illustrate gas evolution reactions, stoichiometry, and qualitative analysis; supports lab manuals, educational websites, and interactive simulations where users seek visual reinforcement of experimental procedures.