25 give an example of a phase change that is endothermic and of a phase change that is exothermic. explain why you have labeled these phase changes as such.

An endothermic phase change would be vaporization. I say this because endothermic changes absorb heat or energy. When something vaporizes it is because it was boiled or evaporated, which contains absorbing heat.

An exothermic phase change would be freezing. Exothermic changes release heat or energy from its surroundings and when something is frozen, it does not contain heat, it releases its heat.

Hope this helps :)

well, you would divide 135 by 33 to get your answer. then that is how many seconds it would take. boardman should fly about 132 m or 4.090909090909091 seconds.

the answer is f1 and d2 because if you put equal force on those two points the beam would balance trust me on this