Question

Write any two chemical properties of hydrogen?

Answer 1

Two chemical properties of hydrogen:

1. Combustible gas
2. Reaction with metal

Combustible gas:

Hydrogen is a highly combustible gas that burns violently in the air.

It produced a high amount of energy in form of heat

It produced a pop sound on burning

Reaction: $$\begin{gathered} {\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to {\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right) \\ \mathrm{Hydrogen}\mathrm{Oxygen}\mathrm{Water} \end{gathered}$$

Reaction with metals:

Metal hydrides are produced by reacting the strong electropositive metal (sodium, potassium, calcium, etc)with hydrogen.

$$\begin{gathered} \mathrm{Na}\left(\mathrm{s}\right)+{\mathrm{H}}_2\left(\mathrm{g}\right)\to \mathrm{NaH}\left(\mathrm{s}\right) \\ \mathrm{Sodium}\mathrm{Hydrogen}\mathrm{Sodium}\mathrm{hydroxide} \end{gathered}$$