Physical
Processes / Reactions 物理过程 wù lǐ guò chéng |
Chemical Reactions 化学反应 huà xué fǎn yìng |
condensation |
burning
of metal |
freezing | neutralisation |
dissolving of some alkali
(e.g. sodium hydroxide) in water |
rusting of iron |
dissolving of concentrated acids in water | reaction of reactive metals
with an acid |
dissolving of anhydrous salts in water | reaction between calcium carbonate and hydrochloric acid |