Testing pH This is the title part This is the title part.

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Presentation transcript:

Testing pH This is the title part This is the title part

Introduction Background: Background: Universal indicator paper changes color depending on the pH of the solution. Universal indicator paper changes color depending on the pH of the solution. Acidic things have a low pH and lots of Hydrogen. (0-6) Acidic things have a low pH and lots of Hydrogen. (0-6) Basic things have a high pH and a low amount of Hydrogen. (8-14) Basic things have a high pH and a low amount of Hydrogen. (8-14) Things that are neutral are at 7 Things that are neutral are at 7 pH is a scale of 0-14 pH is a scale of 0-14

Hypothesis Which substances that you have do you think will be basic, neutral, and acidic? Which substances that you have do you think will be basic, neutral, and acidic? Why? (based on what you know about them and observations you have had with these substance) Why? (based on what you know about them and observations you have had with these substance)

Materials and Equipment Beakers Beakers pH indicator paper pH indicator paper Lemon juice Lemon juice Vinegar Vinegar Window cleaner Window cleaner Mouthwash Mouthwash Milk Milk Water Water Detergent and water Detergent and water

Procedure Test each solution with a new pH paper indicator strip. Test each solution with a new pH paper indicator strip. Write down the results or each test. Write down the results or each test. Construct a pH scale ranging from 0-14 Construct a pH scale ranging from 0-14 Place the solutions on this scale. Place the solutions on this scale.

Analyze your data Were your hypothesis correct? Were your hypothesis correct? Which ones did you have correct? Which ones did you have correct? Which ones did you have incorrect and why do you think? Which ones did you have incorrect and why do you think?

Conclusions and Error Analysis Did any of these substances surprise you? Did any of these substances surprise you? What did you find out about cleaning agents? What did you find out about cleaning agents? Could you have done anything better or did you make any mistakes? Could you have done anything better or did you make any mistakes? What would you do differently next time? What would you do differently next time? Make a new hypothesis or what do you want to test for next time? Make a new hypothesis or what do you want to test for next time?