At what temperature does the solid start meltin
-20°C
0°C
20"
80°C

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.

What is the temperature of one mole of helium gas at stp?

How do scientists think that gravity affected the formation of our solar system?