Cual es la importancia que han tenido los sólidos en el desarrollo de la vida del ser humano?

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.

Ineed ! i have no clue how to do this problem.

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false