One significant application of chemical bonding is in the development of materials. For instance, the strong covalent bonds in diamond make it extremely hard and durable, making it suitable for cutting tools and jewelry. On the other hand, the weak intermolecular forces between molecules of a gas, such as oxygen, make it easy to compress and expand.
In addition, chemical bonding plays a vital role in biological processes. The ionic bonds between sodium and chloride ions in sodium chloride (common salt) are essential for maintaining the balance of fluids in our bodies. Furthermore, the covalent bonds in biomolecules like proteins and carbohydrates are crucial for their structure and function. gcse chemistry revision notes pdf