PLS HELP!! it’s science how do waves travel through gas

Name the element in group 17, period 2. (periodic table)

In 2002, the rare earth elements mine in mountain pass, california was closed because

Freezing and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.