If it turns blue or green that means we added something basic. If it turns pink that means we added something acidic.
Then we put soda stuff (baking soda) in the purple cabbage juice. It turned blue. That means it is basic.
(Vinegar hypothesis: blue) Vinegar turned the cabbage juice pink. That means it's acidic.
(Milk of magnesia hypothesis: green) Milk of Magnesia turns it green. It means that it is basic.
(Milk hypothesis: black) Milk turned into nothing. It stayed purple. That means neutral.



