Note: DON’T try this experiment at home. Our toilets put up with a lot, they deserve better than to be blown apart. Everybody’s probably familiar with the colloquial phrase “praying to the porcelain ...

You remember the sodium demo from chemistry class: Just a small chunk of the pure metal dropped into water causes a great big flash and bang. You might even remember ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...