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 to the chemistry page

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.