Question

What is the cause that sodium produces fires on reacting with water

Answer 1

Metals react with water and produces a metal oxides and hydrogen gas...

Answer 2

Answer:

Sodium is easy to cut with a knife. The result is a shiny surface, but this soon dulls because of the action of air and moisture. If sodium is burnt in air the result is white sodium peroxide, Na2O2, together with some sodium oxide, Na2O, which is also white.

2Na(s) + O2(g) → 2Na2O2(s)

4Na(s) + O2(g) → 2Na2O(s)