Elementary school science and technology experiment--stencil rubbing

The first one doesn’t know...

Water and fire are compatible

Put the candle in the can and pour the water to a place slightly lower than the candle , lit the candle. After a while, the candle not only did not go out, but also burned very well.

Principle: The wax oil forms a protective layer on the water, so the candle is not extinguished (it does not work after a long time, the fire will be extinguished due to too much wax oil...)