This demonstration uses food and a series of containers and additives to model the process of mechanical and chemical digestion in the human (mammalian) digestive system. The demonstration begins with actual food items and ends with a paste closely resembling fecal matter. Due to the high “gross” factor, this demo is a hit with students and is guaranteed to be very memorable.
Categories: Teacher Demonstration
This activity demonstrates the use of carbon by an aquatic plant. The process of photosynthesis can be represented by the reaction: CO2 + H20 + light _ C6H12O6 + O2. There are two distinct steps: the... read more
This PowerPoint presentation offers teachers ideas for demonstrations of multiple concepts across grades 9 through 12 chemistry classes. read more
In this inquiry, students are shown how to do a simple titration with basic apparatus, using a dropper instead of a burette. This enables students to do several quick titrations using different... read more