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Cabbage Chemistry

Science Fair Project
by

Zoe Ruffin

on 20 November 2012

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Transcript of Cabbage Chemistry

Cabbage Chemistry The Purpose of my project is to determine the Ph Balance of certain everyday household items . I used items that we use at home regularly to conduct my experiment. I was to make my own homemade Ph indicator to decipher the Ph balance of each items. In the end, I would know whether my items were acid or alkaline. Purpose Before I started my experiment I thought that the onion indicator would change color more because it had a lighter pigment. Hypothesis Materials Red cabbage
Boiling pot of water
Strainer
Dixie cups
Medicine dropper
Pine Sol (lemon)
Clorox
Apple juice
Lemon juice
Vinegar
Red onion
Apple 1. Grate the small red cabbage and place the pieces in a glass bowl 2. Pour boiling water into the bowl just to cover the cabbage. 3. Leave the cabbage steeping until the mixture is room temperature. the liquid should be red in color. 4. Place a strainer over a collection bowl and pour the mixture through the strainer to remove pieces of cabbage. 5. now you should have a clear liquid that will be either purple or blue. The color of the liquid should change depending upon the Ph. 6.Set aside your indicator solution, you will use it as your "stock" solution for your experiment. 7.Next you will test various household items. ( be sure to use separate containers for each solution. You don't want to mix chemicals that don't go together. 8.Now fill about half of your cup with your indicator. 9.Add drops of a liquid you want to test until you see a change in color. 10.Record the Ph of each item and a description in a data table. I used other variables in my experiment other than cabbage i also used apple peelings and red onion skins. I used this chart to determine the Ph balance of my items: Conclusion In conclusion my hypothesis was incorrect the items changed more color in the cabbage indicator, I learned that depending on whether the variables were acid or alkaline determined the Ph balance.
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