Question

Is Hydrogen gas evolved when metals react with steam?

Answer 1

IF they react: yes.

Explanation:

In those cases the metal is oxidized. In some cases the oxide will react further to form a hydroxide:

`M+H_2O->MO+H_2`

Or:
`2M+4H_2O->2M(OH)_2+H_2`

This is for metals with a valence of 2. For other metals the coefficients will be different:

`2Na+2H_2O->2NaOH+H_2`