Testing for acids in Senior infants

WE TESTED DIFFERENT LIQUIDS AND BREAD SODA TO SEE IF THEY WERE ACIDIC OR NOT. 
WE BOILED RED CABBAGE AND ADDED A SMALL AMOUNT OF ORANGE JUICE, APPLE JUICE, MILK, VINEGAR, BREAD SODA AND WATER TO THE CABBAGE JUICE.

 WE FOUND OUT THAT APPLE JUICE, ORANGE JUICE AND VINEGAR TURNED THE PURPLE CABBAGE JUICE PINK.

WE FOUND OUT THAT BREAD SODA AND MILK TURNED THE CABBAGE JUICE BLUE OR A CLOUDY COLOUR.
WE KNOW WE MUST BRUSH OUR TEETH IF WE DRINK ACIDIC DRINK LIKE ORANGE JUICE AND APPLE JUICE!