Question

experiment to show that air is essential for burning​

Answer 1

Answer:

If you limit the amount of air available, the candle's flame eventually goes out once it uses up all the oxygen. Air is essential for burning fuels as oxygen is an essential component for burning or combustion process and oxygen is composed in the air so air is essential for burning fuels

Answer 2

Take a lighted candle
And place a glass on top of it the fire should go out (should cover entire candle)