Given the reaction: 2 Na(s) + 2 H2O() → 2 NaOH(aq) + H2(g) What substance undergoes oxidation?

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

It has to be b i hope this

Answer///an early form of the atomic theory; dalton atomic theory;