User talk:Pedro Silva

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)

adding electrons

Yes this is better since the interactions of electrons ARE all that chemistry is about, contrary to physical reactions. That is why I also added EM radiation interacting with electrons (excited atoms/molecules) to mark them as chemical not physical. The ambiguity about chemical reactions has lessened now - though not totally. And yes my worry - as with you - was why in an inttroduction - but since it was there (chemical reactions) it needed be set in its own right and not having mixed interpretations about what a chemical reaction is - contrary to any other kind of reaction. [maybe for understanding better who I am I might be inclined to fill in some more details in my editor page - but so far I am not interested in filling out details of telling that I do have a doctorate in physical chemistruy and a masters in biochemistry/bio-physics as these appear to me mundane to tell. Anyway - this is nice to start with but I will try to formulate an even stronger discription of the chemical reaction - because you omitted the removing of an electron from a substance (hydroxyl-radical for instance) such being chemical as well in nature.