Haz Mat training demonstrations
So... I'm wanting to bring something different to a variety of hazmat training programs I teach. I would like to help students understand some of the chemical properties, such as vapor density, specific gravity, etc. Do you have any ideas or methods I can incorporate into the training programs?
Right now, I use dry ice to demonstrate vapor density. I place the dry ice in a water filled ball. Students can see the "cloud" of carbon dioxide develop and begin to roll over the edge of the bowl. I have candles spaced around the bowl at different distances (3", 6" 12"). Students can see the cloud of carbon dioxide roll down the sides of the bowl and begin extinguishing the candles. Additionally, this demonstrates oxygen displacement.
For specific gravity, I use colored cooking oils and water. The different colored fluids have very delineated borders, helping to see how some lighter gravity materials float on water and heavier fluids sink to the bottom of the container.
Other ideas I can incorporate to help students "see" chemical properties in action?