Cabbage contain Anthocyanins called Cyanidin. These are responsible for changing color with pH. Changing the pH affects the shape of the molecule which, in turn, changes its wavelength absorption.
The color is red at pH = approx.7; the color of cabbage juice depends on the pH of a solution.
Acidic solution: red
Neutral solution: purple
Basic solution: greenish
Nature provides us with pH indicators in the form of plant pigments known as antocyanines, which change color over different pH ranges, depending on source. The indicators derived from red cabbage and red beet are two examples. Red cabbage juice will function over a wide pH range, from as low as pH 1 up to pH 12. The following is a pH color chart for red cabbage... pH 2=red, pH 4=purple, pH 6=violet, pH 8=blue, pH 10=blue-green, pH 12 = green-yellow.
cabbage juice...
ang sama
i turns yellow and it turns pink when you add acids
At a pH of 10-11 the color of the red beetroot juice change from red to yellow.
When adding tomato juice to cabbage juice, the cabbage juice turns redish
As tea ranges from mildly to strongly acidic, the cabbage juice should turn red or pinkish.
The color change, though physical by itself, is caused by a chemical change of some colored substances in cabbage.
Basic colour of C.J. is purple blue
pink
no it reacts only with rainbow cabbage juice and not red
I've never heard of it changing color when it is cooled, but it does change color with pH, and can be used as an indicator for acids and bases.See the Web Links for more information about using cabbage color as a pH indicator.
Because tooth paste is a base because anything that turns a blue or green when mixed with red cabbage juice(indicator) is a base.
Red cabbage juice will turn pink when an acid is added to it. Due to the acids in a carbonated drink, 7up till turn the juice a pink colour.
It usually takes approximately 4 drops.
orange
It is an acid, because Red Cabbage Juice is an indicator, and White Vinegar is an acid.