Because of the carbon dioxide that is donated to it!
either a green, dark green or blue colour for i have done the test myself
the cup of lemonade will turn a bright red color because it is an acid
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
No color change is there...
Change color
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.
either a green, dark green or blue colour for i have done the test myself
Because tooth paste is a base because anything that turns a blue or green when mixed with red cabbage juice(indicator) is a base.
the cup of lemonade will turn a bright red color because it is an acid
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
It is an acid, because Red Cabbage Juice is an indicator, and White Vinegar is an acid.
No color change is there...
Change in Color.
Change color
The classification of chemicals that are sensitive to changes in pH are known as indicators. There are many long chemical names for many but something as common as purple grape juice will show a color change in the presence of changing pH.
The color change, though physical by itself, is caused by a chemical change of some colored substances in cabbage.
Each indicator has a specific change of color when the pH is changed.