✔ 最佳答案
Q1 is chemical property, and Q2 is a physical one.
whether it's chemical property or not depends on the structure of substance.
if one's structure changes afterward (change the chemical nature of matter) , it's a chemical property. (eg. losing or gaining electron) when talking about reactivity, like the reactivity of metal towards water, it is a chemical property as it involves changes in the electronic structure of the metal. eg. 2Na + 2H2O ----> 2NaOH + H2
for the bending of metal, it only involves sliding of the metal layer. No change in the chemical nature of the matter/ structure of the substance.
2012-01-06 19:28:24 補充：
seems that i'm 班門弄斧.......
structure refers to electronic configuration ?
and so when ice turning into water, graphite turning into diamond, they still have same no. of electron in their shells but only differ from the number of molecules/atoms bonding to each molecules/atom.
2012-01-06 19:33:24 補充：
for oxygen to ozone, it's similar to graphite to diamond, they are allotrope, so not chemical reaction?
Please comment again. Thanks!!
