All about gallium, the metal that melts in your hand
by Caroline Siede from on (#2SXXK)
In this nifty YouTube video, Dave Hax talks through the properties of gallium, the metal that liquefies at just 86F and is safe to play with. (Just don't eat it!)
https://www.youtube.com/watch?v=4u6A40QTWVIHax has a whole collection of videos about gallium on his YouTube channel.
https://www.youtube.com/watch?v=yaPCUqq5lksIf you want to give it a try yourself, you buy 20 grams of gallium for less than $10 on Amazon.