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    ¤£¹L®Ñ«×¸Üfree electrons = ...

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5-WATER ?

example of molecular crystals include
1.iodine
2.copper(ii)sulphate-5-water
3.ice


a   1 and 2
b   1and 3
c    2and 3
d 1.2.3

¦³regular shape³£«Ycrystal
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¦ý«Y..molecular crystals
2«Yionic©Ò¥HµLmolecule
so answer«Y1and3

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5-WATER ?

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ionic compond¾¤

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state one similarity and difference between solid and liquid

similarity:they have fixed volume
difference:solid has fixed shape

suggested one type of intermolecular force

­ì©«¥Ñ hahahahe26 ©ó 6/1/2008 22:02 µoªí
suggested one type of intermolecular force
weak  ...

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why the atmosphere is important ?  suggest 2 reasons

­ì©«¥Ñ [¢Ù] ©ó 2008-1-6 22:04 µoªí
why the atmosphere is important ?  suggest 2 reasons
to provid ...

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to trap the heat come from sun