(a) 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 formed by transferring electrons from one atom to another are called ionic compounds.
Example of ionic compound: Sodium chloride, NaCl
(ii) The compounds formed by the sharing of electrons between two atoms are called covalent compounds.
Example of covalent compound: Methane, CH4
(b)A comparison between the properties of ionic and covalent compounds are given below:
- Ionic compounds are mostly 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.
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