Editing Answers To Questions For Brief History Of Atomic Structure Handout
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Here are answers to [[Questions for Brief History of Atomic Structure Handout]].<br> <br> 1) Dalton<br> <br> 2a) A green "glow" of light<br> 2b) That green "glow" was not light (since it bend direction when exposed to magnet) but a negative particle (moved away from negative end of magnet) coming out the metal (represents an atom). We call them electrons.<br> 2c) Plum pudding model<br> <br> 2d) The "plum" are the electrons (negative circles/spheres) with everything else being positive.<br> <br> 3a) Rutherford, nucleus<br> 3b) Rutherford "shot" a bullet (actually positively charged alpha particle) thru gold leaf that was inside an "egg" with inside surface of egg coated so that you could see where alpha particle hit it.<br> 3c) There is a high mass, small volume, positively charge center called nucleus and rest of atom is empty space where electrons reside.<br> <br> 4a) Movement/pathway of electrons (e<sup>-</sup>).<br> 4b) Energy levels<br> 4c) Electrons move (revolve) in energy levels like planets around the Sun.<br> 4d) Planetary model<br> 4e) Nucleus (positively charged, high mass, small volume center), electrons outside nucleus rest of volume of atom empty space.<br> 4f) That electrons (in energy levels) revolve around nucleus like planets around Sun.<br> <br> 5a) All electrons are in the LOWEST AVAILABLE ENERGY LEVELS.<Br> 5b) Absorb a discrete (specific) packet size of energy<br> 5c) Excited state of atom<br> Def: NOT all electrons are in the LOWEST AVAILABLE ENERGY LEVELS in atom<br> Energy is emitted (goes out of atom) from atom<br> 5e) Atom is back in the Ground State<br> 5f) Nothing (atom does absorb any discrete packet size of energy.<br> <br>
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