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Chapters 4 and 5
discovering the structure of the atom |
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Introduction
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- Notes: early theories (Using Guided Rdg WB as notes)
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Structure of the Atom
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- Thomson and Rutherford's experiments in detail
- Demo: Observing Cathode rays (video)
- Activity: Rutherford's Experiment
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Distinguishing among Atoms |
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- Atomic Symbols
- Isotopes and isotopic notation
- Lab: Atomic Mass of Candium
- Text Review Worksheet
- amu conversions
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Bohr Model and Quantum Mechanical Model |
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Electron Arrangement |
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Understanding Spectra |
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Test prep |
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Online Practice Tests and Quizzes |
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Assessment |
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- Guided Reading Workbook
- Unit Test
- Project - History of Science
- Laboratories and Lab Quizzes
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California State Standards |
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Atomic and Molecular Structure
- The periodic table displays the elements in increasing atomic number and shows how periodicity of the physical and chemical properties of the elements relates to atomic structure. As a basis for understanding this concept:
- Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass.
- Students know how to use the periodic table to identify metals, semimetals, nonmetals, and halogens.
- Students know how to use the periodic table to determine the number of electrons available for bonding.
- Students know the nucleus of the atom is much smaller than the atom yet contains most of its mass.
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- * Students know how to relate the position of an element in the periodic table to its quantum electron configuration and to its reactivity with other elements in the table.
- * Students know the experimental basis for Thomson's discovery of the electron, Rutherford 's nuclear atom, Millikan's oil drop experiment, and Einstein's explanation of the photoelectric effect.
- * Students know the experimental basis for the development of the quantum theory of atomic structure and the historical importance of the Bohr model of the atom.
- * Students know that spectral lines are the result of transitions of electrons between energy levels and that these lines correspond to photons with a frequency related to the energy spacing between levels by using Planck's relationship (E = hv).
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