Correct Setup for Oxygen Depletion Experiment with Inverted Jar #1625806 (License: Personal Use)

This diagram contrasts an unsafe experimental setup-where a burning candle is placed under an inverted jar submerged in water-with the correct method using a coiled wire to consume oxygen without flame hazards. The safe version prevents water backflow, explosion risk, and ensures accurate observation of gas volume change. It’s ideal for classroom demonstrations of combustion and atmospheric composition.

Used in science education materials, lab safety guides, and chemistry curriculum resources to teach gas laws and combustion principles; matches user intent for safe, reproducible classroom experiments.