What are the properties of H2O molecules that allow them to form the unique geometrical patterns that snowflakes take and how is it done?

It is their shape, and their polarity, and the hydrogen bonds that form.

It is done by deposition, or desublimation.

 

You can read more on wikipedia's website about... Water!

 

[edit] I just realized that I probably answered your homework question.

hye this is my first reply to this forum and please tell me ,is it helpful for you ?

log on http://chemistry.about.com/od/moleculescompounds/a/snowflake.htm

Hi vedmecum - That is a good link. Thank you for sharing it. Welcome to SFN.

CP,

 

Thanks for the links... and no, this is not a homework assignment. I'm honestly just curious.

 

vedmecum,

 

Thanks also. I'll have to read all the links later (busy right now) and I'll get back to you about how useful it is.