Download The Atom

 Honors Chemistry 1st Grading Period Power Objectives: •
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Articulate elemental and molecular properties utilizing physical structures of the atom and the periodic table. (P.O. #1) Characterize interactions between matter and energy. (P.O. #2) Demonstrate how mathematics describes concepts in chemistry. (P.O. #3) Design and conduct chemistry investigations. (P.O. #4) Academic Vocabulary:
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Dalton’s Atomic Theory atom Cathode ray electron valence electron nucleus proton neutron atomic number isotope mass number atomic mass unit (amu) atomic mass electromagnetic radiation wavelength frequency amplitude •
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electromagnetic spectrum quantum Plank’s constant photoelectric effect photon atomic emission spectrum ground state quantumanumber De Broglie equation Heisenberg uncertainty principle quantum mechanical model of the atom atomic orbital principal quantum number principal energy level energy sublevel electron configuration Aufbau principle Hund’s Rule
The Atom
Enduring Understandings: Essential Questions:
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Without atoms the universe would not exist. Our descriptions (models) of the structure and properties of matter have changed over time, with the acquisition of new knowledge by experimentation and analysis. The period table was not developed in one day; it is the compilation of many years of scientists’ research. Elements in the same row and column share similar properties due to their atomic arrangement. Trends in the organization of the periodic table help us understand the unique properties of each element. •
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What are the similarities and differences of the atomic models of Democritus, Aristotle, and Dalton? How was Dalton’s theory used to explain the conservation of mass? What is an atom? How can the subatomic particles be distinguished in terms of relative charge and mass? What is an isotope? Given the mass number and atomic number, how are the number of electrons, protons, and neutrons in an atom calculated? How do the waves and particle natures of light compare? How is quantum energy related to an energy change of matter? How do continuous electromagnetic spectra and atomic emission spectra compare and contrast? How do the Bohr and quantum mechanical models of the atom compare? How are the Aufbau principle and Hund’s rule used to write electron configurations using orbital diagrams and electron configuration notation?