Question

What happens when Calcium reacts with water?

Answer 1

Generally metals reacts with water (${\mathrm{H}}_2\mathrm{O}$) and gives the respective metal hydroxide.

For example Calcium ($Ca$) reacts with water and forms Calcium hydroxide ($\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$) and Hydrogen (${\mathrm{H}}_2$) as the products.

The balanced chemical reaction is as follows.

$\underset{\mathrm{Calcium}}{\mathrm{Ca}\left(\mathrm{s}\right)}+\underset{\mathrm{Cold}\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Calcium}\mathrm{hydroxide}}{\mathrm{Ca}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}$