43.5: Analysis

PHSC-1: Physical Science Survey · LibreTexts

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    1. Compare your observations with what other teams observed. Decide as a team whether to change any of your recorded answers.
    2. Use the following scale for the universal indicator to assign pH values to your solutions in the changing colors experiment. Record what you think the pH value was for each pour.
    Table \(\PageIndex{1}\): Scale for the universal indicator to assign pH values

    Red

    Pink

    Orange

    Yellow

    Green

    Blue

    Purple

    1

    3

    5

    6

    8

    12

    14
    Table \(\PageIndex{2}\): pH value for each pour

    Stage of Experiment

    pH

    1st Beaker added to 2nd Beaker

    		  

    2nd Beaker added to 3rd Beaker

    		  

    3rd Beaker added to 4th Beaker

    		  
    1. What is the evidence that chemical reactions were taking place during these processes?
    2. State any errors that may have resulted in the wrong color(s) being observed.

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