In Priestley's second experiment in which both a plant and the candle were enclosed in the container, what occurred?

Question

The flame persisted longer than the original experiment

It exploded

It changed color

The candle was extinguished immediately

Answer 1

In Priestley's second experiment, where both a plant and a candle were enclosed in a container, the candle burned longer than it did in the original experiment without the plant. This observation led to the conclusion that the plant was releasing a gas (later identified as oxygen) that supported combustion. Therefore, the correct answer is:

The flame persisted longer than the original experiment.