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Transcript
Chapter 5 #1) Why did Rutherford’s atomic model need to be replaced? Rutherford’s model looked a bit like a solar system It didn’t explain such things as why elements give off light of specific colors when heated: Example: fireworks, iron #2) What was the basic new proposal in the Bohr model? That electrons each contain a specific amount of energy as defined by their orbit. The further out the electron orbits, more energy the electron has. Orbits are fixed distances. #3) What does the quantum mechanical model determine about electrons in atoms? That electrons can only orbit in very specific energy levels, they cannot orbit BETWEEN these levels. #4) How do two sublevels of the same principle energy level differ from eachother? P-orbital S-orbital Play Chem ASAP from PHschool The orbitals are shaped differently. #5 How can electrons in an atom move from one energy level to another? BohrModel Bohr Model #6) The energies of electrons are said to be quantized. Explain what that means. Each electron contains in its orbital a very specific amount or “quantum” of energy. If an electron gains or loses energy, it must change its orbital. http://center.acs.org/periodic/tools/PT.html Cool periodic table #7) How many orbitals are in the following sublevels? a. 3p sublevel b. 2s sublevel c. 4p sublevel d. 3d sublevel e. 4f sublevel
