A Dozen or More Calculations Solutions – Serial Dilutions Mason, Koeck, and Kulhanek
BCCE August 1-5 University of North Texas Denton, Texas
TEKS Development and Correlation to CCRS  Lone Star Chemistry Solutions https://callevents.unt.edu/ei/getdemo.ei?id3&s=_30...
Engagement Solutions…..  2+2 = 5??? <ul><li>Dynamic Diana’s  Daring Demos </li></ul><ul><li>Is there a Law of Conservation...
Exploration Solutions and Dilutions <ul><li>Spearmint Extraction of Carvone </li></ul><ul><li>Carvone Calculation </li></ul>
Explanation Percent Composition C 11  H 22  O
Elaboration Serial Dilutions-Colorimeter <ul><li>Serial Dilutions </li></ul><ul><li>Colorimeter Ops </li></ul><ul><ul><li>...
Evaluation What is the Concentration? <ul><ul><li>If time allows, determine the concentration of an unknown spearmint solu...
A Dozen or More Calculations Additional Concepts  Molarity, molality,dilutions
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Solutions and Gases Calculations

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Solutions and Gases Calculations presented by Diana Mason, Deborah Koeck and Joyce Kulhanek, ACT2 2010
The TEA has issued and implemented major revisions to the chemistry TEKS. Chemistry is usually the first course students take that requires them to understand how to solve problem that can't just simply be memorized. Even though these new standards have been aligned with algebra I, the actual use of this knowledge is in the middle to higher levels of Bloom's Taxonomy (application, analysis and synthesis). There is also a new emphasis on mathematics that will be incorporated into the Chemistry STAAR exams. This workshop will take 12 (or more) calculations from the revised TEKS that are also documented in the Texas College and Career Readiness Standards and will share teaching suggestions and activities supporting calculations of pH, redox processes, Dalton's law of partial pressure and the ideal gas law.

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Solutions and Gases Calculations

  1. 1. A Dozen or More Calculations Solutions – Serial Dilutions Mason, Koeck, and Kulhanek
  2. 2. BCCE August 1-5 University of North Texas Denton, Texas
  3. 3. TEKS Development and Correlation to CCRS Lone Star Chemistry Solutions https://callevents.unt.edu/ei/getdemo.ei?id3&s=_3000VYEX3
  4. 4. Engagement Solutions….. 2+2 = 5??? <ul><li>Dynamic Diana’s Daring Demos </li></ul><ul><li>Is there a Law of Conservation of Volume? </li></ul>
  5. 5. Exploration Solutions and Dilutions <ul><li>Spearmint Extraction of Carvone </li></ul><ul><li>Carvone Calculation </li></ul>
  6. 6. Explanation Percent Composition C 11 H 22 O
  7. 7. Elaboration Serial Dilutions-Colorimeter <ul><li>Serial Dilutions </li></ul><ul><li>Colorimeter Ops </li></ul><ul><ul><li>Calibrate for each wavelength </li></ul></ul><ul><ul><li>Use 100% solution for each wavelength </li></ul></ul><ul><ul><li>Choose the best wavelength for the dilution </li></ul></ul><ul><ul><li>Use 100%, 50%, 25% and 12.5% solutions for the graph </li></ul></ul>
  8. 8. Evaluation What is the Concentration? <ul><ul><li>If time allows, determine the concentration of an unknown spearmint solution. </li></ul></ul>
  9. 9. A Dozen or More Calculations Additional Concepts Molarity, molality,dilutions

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