Question

Why when sodium reacts with water some flames are seen on the surface of water?

Answer 1

Hydrogen gas released during the burning process reacts strongly with oxygen in the air. A number of sodium compounds do not react as strongly with water, but are strongly water soluble. This is an exothermic reaction. Sodium metal is heated and may ignite and burn with a characteristic orange flame.

Answer 2

Answer:

metals like sodium react with water to give hydrogen. These metal float on the surface of water and catch fire. sodium gives a golden yellow coloured flame.

Na + H2O = NaOH + H2

hope it helps u.