Giving one example each, state what are (i) ionic compounds, and (ii) covalent compounds. (b) Compare the properties of ionic compounds and covalent compounds.

(a) (i)The compounds which are formed by transferring from one atom to another containing ionic bond is called ionic compounds

Example: Sodium chloride, NaCl

(ii) The compounds which are formed by sharing of electrons from one atom to another containing covalent bonds are called covalent compounds.

Example: Methane, CH4

(b) Ionic compounds are crystalline solids whereas covalent compounds are usually liquid or gases.

Ionic compounds have high melting and boiling points whereas covalent compounds have low melting and boiling points.

Ionic compounds are soluble in water whereas covalent compounds are insoluble in water.