Sunday, July 26, 2020

Color changing cabbage

This video describes about the color changing cabbage. You will need bowl, water, lemon water, sugar water, detergent, vinegar, red cabbage solution and baking soda. You can easily identify which of the household items are acid or base.

This is the great way to introduce the acid and base concept to kids. Red cabbage contains a chemical called anthocyanin that changes color depending on the acidity of its environment. The color of the juice changes is response to changes in its hydrogen ion concentration. pH scale describes the concentration of hydrogen ions in a solution
pH 7 means the solution is neutral. Neutral solution turn the indicator purple.
pH less than 7 means the solution is acidic. Acidic solution turn the indicator reddish- pink.
pH greater than 7 means the solution is basic. Basic solution turn the indicator bluish-green or yellow.

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