An inverted 100 ml beaker is placed inside a 400 ml beaker filled with colored water. The 400 ml beaker is placed on a hot plate. The water boils for a while, and then the beaker is removed. The water vapor inside cools condenses back into liquid. The molecules of a liquid take up […]
Archive for August, 2006
Genetic Engineering in the Classroom
Published by August 22nd, 2006 in Demos, Video and Resources. 3 CommentsGenetic engineering may be the single most important development in biology in the last 20 years. Bio Rad is a terrific Bay Area company that sells easy to use kits that can be used in the classroom. Bio Rad’s pGLO transformation kit (see below) essentially allows students to insert the Green Fluorescence Protein […]
Mythbusters Explain Why Diet Coke and Mentos Explode
Published by August 5th, 2006 in News. 5 CommentsWe have all seen the Diet Coke and Mentos videos on YouTube. I have also done this with plain sugar and any soda (see video). After experimenting, the Mythbusters concluded:
“There’s a cascade that happens with — it’s a little esoteric — an ion exchange. Basically the Mentos start to dissolve, and it’s like […]
