Chemical Properties of Water

1. Water reacts with highly electropositive metals like Na, K to liberate hydrogen
2Na(a) + 2H₂O_(l)  →  2NaOH_(aq) + H_2(g)

2. It reacts with acid anhydrides to form acids:

CO_2(g) + H₂O_(l)  →  H₂CO_3(aq)

NB: Water is a chemical compound, which contains hydrogen and oxygen in the ratio 2:1