Question

How can you prove that "Oxygen helps in burning" ? Explain it with Laboratory procedure
and neat labelled diagram.​

Answer 1

Answer:

Put each candle under each glass separately. One should have oxygen inside the glass and the other shouldn't have it. The glass in which the oxygen is present will last longer that means the candle burns until all the oxygen inside the glass is used up. This shows that oxygen helps in burning

Explanation:

Because twice as much oxygen is burned than carbon dioxide released, the air volume decreases. ... When the oxygen is depleted, the candle goes out and the air cools. The volume of the air decreases and the water rises. The temporary temperature change delays the rise of the water.