Identify the substances oxidised and reduced in the following redox reaction. Also, write the ionic equations for the substances oxidised and reduced.

$\mathrm{Zn}\left(\mathrm{s}\right)+2{\mathrm{AgNO}}_3\left(\mathrm{aq}\right)\to \mathrm{Zn}\left({\mathrm{NO}}_3{)}_2\right(\mathrm{aq})+2\mathrm{Ag}(\mathrm{s})$

Identify the substances oxidised and reduced in the following redox reaction. Also, write the ionic equations for the substances oxidised and reduced.

Oxidation is the loss of electron and reduction is the gain of electron. On the basis of these concepts select the species (i) oxidized, and (ii) reduced in the following reactions.

$\mathrm{Zn}\left(\mathrm{s}\right) + {\mathrm{Cu}}^{2+}\left(\mathrm{aq}\right)\to {\mathrm{Zn}}^{2+}\left(\mathrm{aq}\right)+ \mathrm{Cu}\left(\mathrm{s}\right)$