The number below and to the right of an element in a chemical formula. it represents the number of atoms of that element in chemical compound or molecule.

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.