User talk:Pedro Silva
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Welcome, Pedro! --Larry Sanger 02:33, 1 November 2006 (CST)
chemistry
You deleted the part in the chemistry page that distictively states what differentiates chemical reactions from physical: chemical reactions only involve electrons of atoms/molecules. I would like to put that very basic and important thing back!
Chemistry page
I added a sentence on the problem you requested. I had removed it because I consider that a description of bonding was probably best left to the "Bonding" section. Do you like it now? Pedro Silva 09:10, 10 November 2006 (CST)