After this lesson, you should be able to:

• List macroscopic characteristics of acids and bases and give examples
• Use the acid-base theories of Arrhenius and Brønsted – Lowry to define acids and bases
• Define acids and bases as H⁺ donors and acceptors respectively
• Identify conjugate acid-base pairs
• Write equations for acids with metal oxides/hydroxides/cardonates
• Know that acid-base reactions form salts
• List some natural indicators