NO-PREP LESSON! 20-slide PPT, an exit ticket, check for understanding questions, and visuals/video clips! I am confident you will find this a valuable resource!
This lesson focuses on the foundation of elements and pure substances. I start off by showing a picture of a bunch of furniture to students. They are then asked to brainstorm all the types of materials that would be left over if someone took a sledgehammer and started breaking everything down. Most students come up with wood, glass, plastic, nails, leather, etc.
Students are then shown pictures of gold bars and silver bars and are asked what would be left over if I tore them apart into many pieces. There response is that it will still be gold. Even if heated up, it will still be liquid gold. This activity is to lead to a discussion on pure substances.
Once students have written down the definition of pure substances, they partake in another mini activity. Periodic table are taped to each desk, students in pairs are expected to look at their tables and write down as many elements as they are familiar with. This is to get them used to how the periodic table is set up. An interesting element to note is Xenon (it is in the lights of Audis, BMWs, Mercedes', etc and kids will immediately recognize it after you show them a picture).
Students then take guided notes on elements and atoms and continue to learn that elements cannot be broken down into other elements by physical or chemical means. I end with three check for understanding questions that students answer independently.
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