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Which Has Greater Acidity (pH), a Lemon, an Orange or a Grapefruit?

If you do this science fair project you may wish to hypothesize that grapefruit has more acidity than oranges. You may be right and you may be wrong about this science fair project. There is only one way to find out. You will know the truth after you do these super experiments.

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seventh grade science fair project ideas

 

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