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.
Indium is used in the production of low-melting alloys, typically with gallium. The melting point depends on the ratio of indium to gallium. An alloy with 24% indium and 76% gallium, for example, melts at just 16 o C. (4). This type of alloy can be used as a non-toxic alternative to mercury in some applications.