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Jill needs to test her pool to make sure it has enough chlorine in it. She put water in her test tube and then added 5 drops of the test solution. The water turned light pink.
This indicates a
physical change, because color is a physical property.
chemical change, because ALL color changes indicate a chemical change.
physical change, because the indicator only changed colors slightly.
chemical change, because adding the solution caused the unexpected color change.
Sagot :
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