點解熱水溶得多d野???

因為熱水的能量(動能)比凍水大
物質溶入熱水的時候運動得快~粒子之間的空間自然少了
所以熱水會比凍水溶得更多物質

example:如一架lift最多可以立10人~如果站在lift外看,站了9人都已經覺得滿了
但如果9個人一齊有x律咁move,自然可以騰出一個位....

It's because the heat in the water is giving more energy to the substance to break the bonding between molecules. When the internal energy inside a molecules is so high that is not as steady as in lower temperature. That's why it desolves easier in hotter water.

2006-10-16 21:37:03 補充：
How ever, for gases, as in general their weight is lower than water, when these gases is having an even higher temperture, they escape from the solvent even easier. That's why gases desolves in coller water easier.