如果用粒子理論,要點解釋冰塊在加熱後消失

冰塊其實由無數的粒子組成,當加熱時,粒子開始脹大,移動加快,開始分解成多塊,冰塊愈少,就愈快變成水質層,最後消失了!

Ice is in fact the solid state of water. The water molecules in ice are held by intermolecular forces to form crystals. Because of the strong intermolecular force, the water molecules can only vibrate but have no prominent tranlational motion. Hence, ice remains as a solid.
When heat is given to ice, the water molecules gain kinetic energy, which enabling them to break the strong intermolecular force. These molecules then become free to move around to some extent though they are still held by the intermolecular force. Because of this increased translational motion of water molecules, the solid form of ice disappear and liquid water is formed.