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Chemical Properties Investigation: Is Calcium Chloride an Acid or a Base?

Learn about calcium chloride, universal indicator solution, bromothymol blue, and sodium hydrogen carbonate to form hypotheses on the chemical properties of CaCl2. Conduct experiments with different indicators, record observations, and draw conclusions based on pH levels. Understand the importance of understanding CaCl2 properties and propose creative applications based on your findings.

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Chemical Properties Investigation: Is Calcium Chloride an Acid or a Base?

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Presentation Transcript

  1. Warm up Describe in your own words what an acid is

  2. Warm up answers

  3. question Is the chemical an acid or a base and what is its pH? Calcium Chloride A. Universal Indicator Solution B. Bromothymol blue C. Sodium Hydrogen Carbonate

  4. hypothesis Learn a little about each chemical before you make a hypothesis

  5. Background information Calcium Chloride http://en.wikipedia.org/wiki/Calcium_chloride Universal Indicator Solution http://en.wikipedia.org/wiki/Universal_indicator Bromothymol blue http://en.wikipedia.org/wiki/Bromothymol_blue Sodium Hydrogen Carbonate http://en.wikipedia.org/wiki/Sodium_hydrogen_carbonate Now make your hypotheses (plural of hypothesis)

  6. methods CaCl2with Univerasal Indicator Solution CaCl2with Bromothymol blue CaCl2with Sodium Hydrogen Carbonate Use other indicators if needed

  7. results Record your observations in a data table. Draw a picture (or use a photo), and write a description

  8. conclusion Is CaCl2an acid or a base? What is its pH? Scientifically, what is the reason for these observations?

  9. Cool down Why is it important to understand what the properties of CaCl2are? What is a creative way you could apply what you learned in class today?

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