Welcome to the module on Acids and Bases. 

By the end of this lesson you should be able to: 
1. Explain the difference between an acid, a base and an alkaline. 
2. Test for acids and bases using litmus indicators. 
3. Use the pH scale to classify the acid and base strength of substances. 
4. Test the pH of a variety of substances. 
5. Explain the difference between the strength and the concentration of acids/bases. 
6. Understand the importance of acids and bases in nature.