✔ 最佳答案
(a) We can consider a question in Macroscopic or Microscopic view. For Macroscopic view, we would consider the substance as a whole and in microscopic view, we will only consider the changes among particles.
宏觀角度會處理整個物質的情況，而微觀角度則嘗試從粒子的情況去處理問題
(b) Electric potential energy of particles mean the energy needed to bonded the particles togather as a substance. It is related to the distance between the particles. The further the distance apart, the higher the electric potential energy.
電子位能是指粒子與粒子之間互相吸引而連成一體所需維繫的能量，與粒子之間的距離有關，距離越遠，位能亦越高
(c) The E.P.E increase when the substance melts because the distance between particles increases and they have higher energy and become freely to move within a certain volumn.
電子位能於物質溶解時升高是因為溶解後，粒子與粒子之門的距離變遠了，另外粒子的立能提高了才可變成體於固定體積內自由活動
(d) Kinetic energy consider the vibration rate of the particles in microscopic view. And if the kenetic enrgy increases, it means the vibration rate increases. And If the vibration rate increases, the temperature of the substance would increases in macroscopic view. And so as the question do not state that the temperature changed and that implies the kinetic energy does not change.
於微觀角度的動能是指粒子震動的速度和頻率，當動能上升，震動頻率亦相對上升，而震頻率上升，於宏觀角度則該物質的溫度會上升，題目沒有提及溫度變化則表示粒子的動能沒有變化。
