All elements in a period have the same energy level due to which of the following reasons?
a. the same atomic number
b. the same number of neutrons
c. the same number of electrons
d. the same number of elctron shells

Melting 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.