Question

Name the compounds that are formed when metal or non-metals react with oxygen in the air.

Answer 1

The reaction of metal with oxygen

When magnesium metal reacts with oxygen, it forms magnesium oxide$\left(\mathrm{MgO}\right)$.

$\underset{\mathrm{Magnesium}}{2\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Oxide}}{\underset{\mathrm{Magnesium}}{2\mathrm{MgO}\left(\mathrm{s}\right)}}$

The reaction of non-metal with oxygen

When sulfur reacts with oxygen, it forms sulfur dioxide$\left({\mathrm{SO}}_2\right)$.

$\underset{\mathrm{Sulphur}}{\mathrm{S}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\to \underset{\mathrm{Dioxide}}{\underset{\mathrm{Sulphur}}{{\mathrm{SO}}_2\left(\mathrm{g}\right)}}$