Supersaturation Tower – Flinn Scientific Canada

In this demo, the teacher creates a tower of sodium acetate trihydrate from a supersaturated solution. Your students’ curiosity will grow as you demonstrate the concepts of supersaturation and crystallization!

The sodium acetate solution is a supersaturated solution. The seed crystal is the start of a chain reaction, which causes all of the sodium acetate trihydrate molecules to crystallize. Crystallizing means that a liquid is becoming a solid, or “freezing.” The solution is supersaturated and supercooled—this means that it contains more dissolved sodium acetate than a saturated solution and has been cooled to below its freezing point without crystallization occurring.

Click here to download the complete demo 

Scientists design shape-shifting workout gear powered by bacteria – Home | As It Happens | CBC Radio

Wednesday May 24, 2017

Researchers at MIT have created bacteria-based workout gear covered in ventilation flaps that automatically open up when you sweat.And that’s just the beginning of what they say “living clothing” will eventually be able to do for us. The team of 14 MIT researchers, funded by New Balance Athletics, have created prototypes of men’s and women’s workout gear, as well as sneakers.”It helps to evaporate your sweat more efficiently,” Wen Wang, chemical engineer and lead author of the paper published in the journal Science Advances, told As It Happens host Carol Off.

To find out more check out the source below:

Source: Scientists design shape-shifting workout gear powered by bacteria – Home | As It Happens | CBC Radio