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pH Color Potion
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Materials
Chemical Name / Amount Used
Chemical Name
Amount Used
Deionized water
300 mL
Red cabbage
Enough to fill the beaker
Equipment Name / Number of Items
Equipment Name
Number of Items
Large beaker (600 mL) or pot
1
Smaller beaker (250 mL) or cup
1
Small cup (3 oz)
Strainer
1
Hot plate or stove
1
Beaker 1 — Create the water and cabbage solution
Pour 300 milliliters of water into the large beaker.
Place the beaker on the hot plate and turn on the heating.
Tear leaves of the red cabbage into smaller pieces and place them into the beaker of water—use as many leaves as can fit.
Wait until the water reaches a boil.
Once the solution is dark enough, turn off the hot plate. Wait for the beaker to cool completely before handling.
Place the strainer over the smaller beaker and slowly pour the cabbage–water mixture through the strainer to separate the liquid from the leaves.
Experiment
Add a spoonful of the cabbage solution to a small cup.
Add a small amount of vinegar, lemon juice, baking soda, baking powder, etc., into individual cups with the red cabbage extract and observe the color.
Label and refrigerate or freeze the leftover cabbage solution for later use.