✔ 最佳答案
就快考試@@.....+油啦:)
答番你先
1)Internal energy is the sum of kinetic energy of molecules due to random motion and potential energy of molecules in a system.In this question,kinetic energy is not the main factor since it is affected by temperature.In different materials,the potential energy is different as there structure and also there distance between each molecules.So,internal energy of a substance is affected by the material from which it is made.
2)After adding some impurities, the specific heat capacity of that substance will be higher or lower? Please explain.
The heat capacity will be higher since there is no negative value of specific capacity and also,it always be a constant of each substance.
3).The specific heat capacity of ice is lower than water, why?
Since the water is liquid while the ice is solid.The transformation of heat in ice is such better than water as the molecules in ice is packed uniformly.It needs lower amount of energy for ice than water.So,the specific heat capacity of ice is much lower than water.
