Nitrogen gas consists of a diatomic nitrogen atom. So, the correct answer is B.
then the electrons and protons would have a even amount of negetive electric charges
Boiling Water is a physical change. When water gets to a certain temperature, it's boiling point starts.
Wax is definitely susceptible to heat and with the application of heat such as burning a candle, the solid wax gets converted into a liquid. This fact can be used to remove ear wax also actually using hollow candles that will melt the ear wax and allow it to be drained out of the ear.