energy calculations (2)
DESCRIPTION
Energy 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 wavelength, frequency, Planck's constant and the speed of light, and calorimetry.TRANSCRIPT
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A Dozen or More A Dozen or More CalculationsCalculations
Energy – Acid and Base ReactionsEnergy – Acid and Base ReactionsMason, Koeck, and KulhanekMason, Koeck, and Kulhanek
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BCCEBCCEAugust 1-5August 1-5
University of University of North TexasNorth Texas
Denton, TexasDenton, Texas
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TEKS Development TEKS Development and Correlation to and Correlation to
CCRSCCRS Lone Star Lone Star Chemistry Chemistry SolutionsSolutions
https://callevents.unt.edu/ei/getdemo.ei?https://callevents.unt.edu/ei/getdemo.ei?id=3&s=_3000VYEX3id=3&s=_3000VYEX3
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EngagementEngagement
Mean Green Foam Mean Green Foam MachineMachine
Classically…..Elephant’s Classically…..Elephant’s ToothpasteToothpaste
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EngagementEngagement
Hot or Cold?Hot or Cold?
Baking Soda and Vinegar Baking Soda and Vinegar BalloonsBalloons
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ExplorationExploration
Acid or Base?Acid or Base?
Red Cabbage Indicator PaperRed Cabbage Indicator Paper
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ExplanationExplanation
Conceptual Conceptual UnderstandingUnderstandingAnthrcyanine DyesAnthrcyanine Dyes
Paper Preparation and Use
ColorsEmpirically Use of pH Probes
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ElaborationElaboration
Endothermic or Endothermic or Exothermic?Exothermic?
Materials:Paper matrix of Common Household Acids and Bases
Vernier Temperature Probes
Hypothesis
Experimentally verify
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EvaluationEvaluation
What Percentage What Percentage were Correct?were Correct?
Neutralization reactions forming gases Neutralization reactions forming gases
Neutralization reactions tha remain in Neutralization reactions tha remain in solutionsolution
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A Dozen or More A Dozen or More CalculationsCalculations
Additional ConceptsAdditional ConceptsHess’ Law, Specific Heat, Thermochemical Hess’ Law, Specific Heat, Thermochemical
Equations Equations