一个英语的化学题 急求答案！！！！！！！！！！！！！

Covers the bottom when a thin coverglass 内点 candle to have water (is only has spot water) to light the candle candle very quickly extinguishes the water level to elevate. In the cover joins Ca (OH) 2, appears muddy. The water level elevates the reason is not only has the candle to burn the production water? The muddy reason is not only has CO2 and Ca (OH) 2 responses? Has in the glass the barometric pressure is not constant? If so, what's the pressure? Posthaste! ! ! ! ! ! ! ! ! ! !