Two pieces of iron at the same temperature but with the different masses - 500 g and 1000 g -
both have 4.5 kJ of energy added to them. Which would be warmer and why? (Must show
mathematical evidence to support your answer!)

Asubstance is held in an open container. its particles move past one another at random speeds but do not leave the container. heat is removed from the system, and the particles slow down. when enough heat is removed, the particles no longer have enough speed to overcome the weak attractive forces between them. when this happens, the substance enters its solid state. the process described above is known as .