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2005 U.S. National Chemistry Olympiad - Local Section Exam
National Chemistry Olympiad tests are released after their use each year, since they cannot use them again for this event. The result: outstanding comprehensive assessment resources for general chemistry classes! This 2005 version covers...
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Elements, Atoms, Ions, and the Periodic Table
This PowerPoint provides a complete recap of all the information needed for a unit on elements and the periodic table. The seventy slides cover the basic notation of elements, energy levels and ionization energies. The trends in the...
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Up and Atom
"Up and Atom" is a mini-unit introducing middle-schoolers to the wonders of elements. Participants draw atom models, examine the periodic table, compare samples of metals to nonmetals, identify unknown elements, and more! The beginning...
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Lewis Dot Structures
In this Lewis dot structure worksheet, students draw the Lewis dot structure and give the electron arrangement and molecular geometry for 27 chemical compounds.
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Isotopes and Ions
Students examine the concepts of isotopes and atoms. In this powerpoint lesson, students see the balance in numbers of protons, neutrons, and electrons create isotopes and ions of certain atoms.
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Ionization Energies in Group I and Period 2
In this electron arrangement worksheet, students complete 2 graphic organizers by determining the proton number of given elements from their first ionization energy. Students plot graphs of first ionization energy against the proton number.