Auditory processing disorder (also known as central auditory processing disorder or CAPD) is a condition that makes it hard for kids to recognize subtle differences between sounds in words. It affects their ability to process what other people are saying.
Gallium is a solid metal at room temperature, but it melts in your hands. 00:09. When gallium is in its liquid state, if feels like cold melted solder in your hands. 00:33. Melting gallium onto aluminum makes the aluminum brittle enough to break with your fingers.
Lead melts at 327 C and magicians who stick their in hand it only stick it for a few seconds, if that. Lava is between 700 and 1200 C. I am quite sure if you stick your hand in it, even less than a second, you will have severe damage caused to the hand.