AQA Chemistry Bonding Revision Notes

• 1Ionic bonding involves the transfer of electrons from one atom to another, resulting in charged ions.
• 2Covalent bonding occurs when two atoms share electrons to achieve a full outer shell.
• 3Metallic bonding is characterized by a 'sea of electrons' that are free to move, allowing metals to conduct electricity.
• 4Bonding affects the physical and chemical properties of substances, including melting and boiling points.
• 5The strength of different types of bonds varies, influencing the stability and reactivity of compounds.

Bonding is how atoms stick together to make molecules. There are three main types: ionic bonds, where atoms give away or take electrons; covalent bonds, where atoms share electrons; and metallic bonds, where electrons move freely among metal atoms. Each type of bond affects how substances behave, like how hard they are or if they can conduct electricity.