1.Blowing bubbles into red cabbage juice can turn the colour from purple to pink! But why? Cabbage juice acts as a pH indicator! In this case, the CO2 in your breath makes the pH more acidic, changing the colour of the solution!
2. We refer to cabbage juice as a ph indicator because it can tell us if a substance is acidic or basic.some example of bases are ammonia and baking soda.
3.A lower pH data indicates the ocean is becoming more acidic whereas a higher pH indicates the ocean water is becoming less acidic.
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Lastly , you can now write a conclusion and the result obtained from the experiment in the last paragraph of the report .