A simple lesson: Hand out molymod kits and get the pupils to select the correct atoms and bond them together. They'll soon realise that Carbon needs to form 4 bonds.... etc. If you go through a few examples of how to draw covalent bonding diagrams, it should be pretty straight forward. I&'ve also attached some past exam questions to use as a hw task. I hope you find it useful. Let me know what you think of it.
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