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How does electron change properties of matter?

  1. Sep 28, 2009 #1
    Guys, who knows why admin delete posts like this?? I'm new there and maybe do not know all rules.

    iniatial question was does electrons change properties of matter? If we talk about free radicals and antioxidants - it's problem of unpared electron, so by adding it via antioxidants it change properties of cell. So maybe in other fields there is option to change matter by adding some particles?
     
    Last edited: Sep 28, 2009
  2. jcsd
  3. Sep 28, 2009 #2

    alxm

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    The study of how chemical properties arise from the electronic structure of atoms and molecules is pretty much the heart and soul of chemistry. So if you ask how electrons affect the property of matter, you're essentially asking "how does chemistry work?".

    So for obvious reasons, nobody can really give a short answer to that question.
     
  4. Sep 28, 2009 #3
    But all siencies at the end starts at quantum level? so this is why I posted here. Like when apply molecule with current (220V) what is simple way a lot of electrons, properties of molecule will change is not so? So maybe nobody knows exactly how much electrons holds atom, but if you add it , properties somehow will change?
     
  5. Sep 28, 2009 #4

    alxm

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    No, I wouldn't say that all sciences start at the quantum level. Physics doesn't; as theoretical physicists are trying to come up with a more fundamental theory than quantum mechanics.

    Chemistry is all explained by quantum mechanics, but it doesn't quite 'start' with QM. It essentially starts with the slightly higher-level description in terms of MO theory, etc, so only specialists in physical chemistry/quantum chemistry treat the thing explicitly quantum-mechanically.

    Similarly, molecular biologists don't concern themselves with chemical bonding, but rather start at the molecular level. And physiologists may start at the cellular level. And so on.
    Well, no it's an electrical potential, not necessarily a lot of electrons. But yes, it'll change the properties; it'll polarize the atom or molecule (the Stark Effect)

    I don't really know what you're trying to say here. In general, if you know what an atom or molecule is, then you know how many electrons it has. Otherwise you wouldn't know what it was. A proton is a proton (or hydrogen ion), a proton with one electron is a hydrogen atom. A proton with two electrons is a hydride ion.

    The addition or removal of electrons from atoms is the process of chemical reduction/oxidation. It's quite important and a pretty central form of reaction to chemistry.
     
  6. Sep 29, 2009 #5
    I'm not good enough in chemistry, but theoretically if electron change properties of atom it change properties of matter. Are there any manipulations with this where I can read on web? Just stupid question - if properties are changed - so it would be possible to play and construct some matter out of it? Like LEGO - is not that what QM science do now? not just atom+atom, but by changing properties of atom with electric, laser or magnetic forces?
     
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