The pH Scale

The pH scale is actually based on logarithms rather than just simple numbers. The fact-filled video begins with an explanation of the auto-ionization of water. Then it describes the relationship between H+ and OH- in every solution. It uses the z-diagram to solve acid-base problems before introducing the more complex calculations solved through scientific notation and logarithms.

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CCSS: Adaptable
Instructional Ideas

  • Create additional practice problems using a z-diagram to solve
  • Review scientific notation before showing the video
Classroom Considerations

  • Requires prior knowledge of chemical equations and ions
Pros

  • Includes two different methods for solving ph calculations
Cons

  • Video is not engaging and has trouble holding the viewers' attention