What is pH pH is a measurement of the hydrogen ion concentration of a solution A pH test is used to determine if a solution is acidic neutral or alkaline basic pH level lt7 Acidic ID: 1011563
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1. pH
2. Activity 1: Wading In! pH
3. What is pH?pH is a measurement of the hydrogen ion concentration of a solution. A pH test is used to determine if a solution is acidic, neutral, or alkaline (basic).pH level <7Acidic7Neutral>7Basic
4. Why is pH important?The pH level of a waterbody can impact plant and animal life (humans included).pH Level Impact on Plant and Animal Life <5Unable to support most aquatic life5 – 9Tolerable range for most aquatic organisms6.5 – 8.5Safe drinking water range for humans7 - 8Optimal range for most aquatic organisms>9Dissolve organic materials (such as animal scales and skin)
5. Many factors influence the pH level of waterbody.
6. Fossil FuelsEmissions released during the burning of fossil fuels can react with water in the atmosphere to form acidic precipitation.pH
7. GeologyThe type of geology can affect the pH. For example, weathered limestone releases carbonates that can result in an increase in pH.
8. PhotosynthesispHRespirationpHImages: (left) Cleveland Metroparks, Bugwood.org; (right) Robert Vidéki, Doronicum Kft., Bugwood.orgHydrillaInvasive Aquatic Plant
9. VegetationThe type of vegetation can impact the pH. For example, pine needles are slightly acidic.Decaying vegetation produces organic acids that can result in a decrease in pH. pH
10. How is pH measured?Several methods are available to measure pHNo units are recorded when measuring pH.
11. pH Chemical Test KitImages: Mike Meyer, UK
12. pH Level Impact on Plant and Animal Life <5Unable to support most aquatic life5 – 9Tolerable range for most aquatic organisms6.5 – 8.5Safe drinking water range for humans7 - 8Optimal range for most aquatic organisms>9Dissolve organic materials (such as animal scales and skin)pH Chemical Test Results
13. Macro Mascots
14. Net-Spinning Caddisfly LarvaeImage: Macroinvertebrates.org – see Notes Section for full citation.Image: Wikipedia (Author: Jjmontem) LarvaeNet from Larvae
15. Gilled SnailImage: Missouri Department of Conservation