Lab Report by hXxlL1

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									        Lab Report
Is It AN Acid Or A Base?




          Name:

_______________________


Date you did the experiment:

_______________________




                               1
Introduction
Rephrase the introduction used on you lab instructions sheet:




Materials

List the materials used in this experiment


      (example) 15 test tubes



      ________________________________



      ________________________________




      ________________________________




      ________________________________




      ________________________________



      Five (5) ml of each test solution: dish soap, distilled water, orange juice, vinegar, coffee,
       tea, NaOH, HCl, baking soda, Acetaminophen, Tums, Coca Cola, lemon juice, milk and
       apple juice.
                                                                                            2
Method:
Describe what you did to find the pH of a solution.

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Results
Observation Table. Record your observations at each station.

Station
                  Solution                                  Observations
Number
                                  What colour did the pH paper become?

                                  What number value does the pH indicator paper tell you the
                                    pH is for this solution?


                                  Circle the correct description of this solution:

                                                    Acid    Base Neutral
                                  What colour did the pH paper become?

                                  What number value does the pH indicator paper tell you the
                                    pH is for this solution?


                                  Circle the correct description of this solution:
                                                  Acid     Base Neutral

                                                                                      3
Station
          Solution                              Observations
Number
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                         Acid     Base     Neutral



                                                                         4
Station
          Solution                              Observations
Number
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                         Acid     Base     Neutral



                                                                         5
Station
          Solution                              Observations
Number
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                       Acid    Base Neutral
                     What colour did the pH paper become?

                     What number value does the pH indicator paper tell you the
                       pH is for this solution?


                     Circle the correct description of this solution:

                                         Acid     Base     Neutral




                                                                         6
Table of results – this is to summarize what you observed. Complete this at the end of
the lab when we are back in class.
          Solution                          pH                Acid, base or neutral
     Dish soap solution

    Distilled water

    Orange juice

    Vinegar

    Coffee

    Tea

    NaOH

    HCL

    Baking soda

    Acetaminophen
    (1 tablet in 20 ml water)
    Tums
(1 tablet in 20 ml of water)
    Coca cola

    Lemon juice

    Milk

    Apple juice




                                                                                         7
Discussion

Answer the following questions: (answer in full sentences)
   1. Which solution had the highest pH value?




   2. Which solution had the lowest pH value?




   3. Which solution had a pH value closest to 7?




   4. Place all the solutions in order from the most acidic to the most basic.




   5. What do you think it means when a pH value is below 7?




   6. What do you think it means when the pH value is above 7?




   7. Circle the value that you think represents the pH of:

           a. Your blood – 4.4,    5.4,    6.4,    7.4,     8.4,    9.4


           b. Your tears - 4.4,   5.4,    6.4,    7.4     8.4,     9.3


           c. Your saliva – 4.4 – 5.4, 5.4 – 6.4, 6.4 – 7.4, 7.4 – 8.4, 8.4 – 9.4




                                                                                    8
Conclusion:
In two sentences, summarize what you found.


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