[header] How to become a chemistry teacher [title] Decide that teaching chemistry is right for you. [step] Being a teacher isn't about learning a subject. It's about being able to pass along that knowledge to others, many of whom won't be as interested as you. 
You need to be able to get excited when explaining chemistry to others. You will need to be a strong communicator to help students understand concepts, and watch them carefully to notice when they may be struggling.