If you blend red cabbage with water (the best ratio for this is 1:2, one cabbage leaf for two cups of water) and then add toothpaste the mixture will turn green. This indicates that toothpaste is a base. If you add vinegar instead the solution will turn red, indicating an acid.
To use toothpaste to show that red cabbage is an indicator, mix a small amount of red cabbage indicator with water in a cup. Add a small amount of toothpaste to the cup and observe any changes in color. The toothpaste may cause a color change in the red cabbage indicator, indicating its acidity or alkalinity.
The related link gives details. Basically what you do is to finely chop red cabbage to get 2 cups of chopped cabbage. Add boiling water to cover, wait 10 minutes and filter the liquid with filter paper, such as used for coffee. You will get a reddish-purple liquid which will turn red in acids and greenish-yellow in a base. Neutral is purple. The link names some household items that you may want to test.
Red cabbage, can be used as an indicator, because it is clasified as a chemical substance. Red cabbage is a coloured indicator that can change colour when a household substance is added.
add toothpaste to red cabbage juice and see if it changes colour
Red cabbage indicator typically does not have a strong smell. It may have a faint vegetal or earthy odor when in its natural state.
Lemonade will turn pink when red cabbage indicator is added to it. This color change is due to the red cabbage indicator being sensitive to pH levels. The acidity of the lemonade will cause the red cabbage indicator to change color to pink.
Red cabbage indicator changes to green or blue in alkali solutions.
The universal indicator is better than the red cabbage indicator because the universal indicator has a wider range of pH that it can explain why a substance is acidic or basic. The red cabbage indicator only tests the substance if it is an acid or a base. Also, the universal indicators are made carefully and it is manufactured in a precise manner so the results are very reliable. Red cabbage indicators will vary in concentration which could cause errors to occur in determining the pH of a substance.
An acid will turn the red cabbage indicator red, pink, or magenta in color. This change occurs because the anthocyanin pigments in the cabbage react with the acidic solution, causing a color change.
Red cabbage indicator typically does not have a strong smell. It may have a faint vegetal or earthy odor when in its natural state.
No, it is natural, coming from "red cabbage".
Nothing, but red cabbage is a simple pH indicator at home (red in acidic solutions).
Red Cabbage
Red Cabbage and Beetroot can be used but what else?
red cabbage is the natural pigment that can act as an indicator.
Filtration
anthocyanin
It is important to release a liquid.
jhihihi
A strawberry can act as a natural indicator due to its pigment, anthocyanin, which changes color in the presence of acids and bases. When exposed to an acid, the anthocyanin in strawberries turns red, and when exposed to a base, it turns green. This color change can be used to determine the pH of a solution.
It is an acid, because Red Cabbage Juice is an indicator, and White Vinegar is an acid.