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.
Silver has a melting point of 1,234.93 Kelvin and a boiling point of 2,435 Kelvin. It is a metal that is solid at room temperature and has a density of 10.501 grams per cubic centimeter. It has been used for more than 5,000 years and can be found today in silver ores and in deposits of lead, gold and copper ores.