Whats required for combustion ....good old oxygen, heat, fuel. Also appropriate chemical reaction.
Science behind the burning of a candle.
Michael faraday's dinner table candle experiments....based on his book Chemical History of a Candle (alok, if u hv time and if this topic interests u, it's an interesting one to explore).
What form does the fuel take, in a burning candle.
Why paper won't burn when wet
Straining flames- how does the Davy safety lamp work.
Candle extinguishing race..candles of different length in an enclosed space...which one goes out first.
Why water level rises if u place an invertd flask over a candle flame (not because O2 is used up)
Egg in a bottle
Combustible Oil in citrus fruits
How do magic bday candles re-ignite
Hottest part of flame
Why do fire crackers go bang
How are sparkles and colourful fireworks made.
Homework: MartinShCol 8.14 - What is the minimum number of coins (same size) required on a plane, so that we need four colors to color the coins?
References:
The Colossal Book of Short Puzzles and Problems, by Martin Gardner