A reversible thermal decomposition reaction is called thermal reaction.

During exothermic reaction, energy is _____.

_____ is the process of loss of electrons.

_____ is the process of gain of electrons.

Reducing agents are electron _____.

Oxidising agents are electron _____.

_____ are reducing agents.

_____ are oxidizing agents.

Complete the following.  Also, balance them.

$\mathrm{Ca}+{\mathrm{O}}_2\to \underset{\left(\mathrm{Lime}\right)}{\mathrm{\_\_\_\_\_}}+{\mathrm{H}}_2\mathrm{O}\to \underset{(\mathrm{Slaked} \mathrm{lime})}{\mathrm{\_\_\_\_\_}}$