This experiment is purple kale changing color.

Experiment materials: purple kale, washing powder, white wine, white vinegar. Kale contains anthocyanin, which turns red when it encounters alkali and green when it encounters acid. The difference in the results of the two experiments is due to the different proportions of the liquids in the mixtures, which led to the different results of the experiments. Through the experiment, we cultivate the interest of science and the curiosity of the unknown, which inspires us to take the initiative to explore the unknown world.

Principle of the experiment: purple kale water is a kind of acid-base indicator, it encounters acidic substances will become red, encounter alkaline substances will become green.

Purple kale is a food, also known as purple cabbage. It is rich in vitamin C and fiber, and is mostly used to make vegetable salad, which has many benefits for our body. But in fact, in addition to the edible value of purple kale, it can also be used to play fun little science experiments Oh!

Purple kale, also known as red kale, red kale, commonly known as purple cabbage, Cruciferae, Brassica genus kale species in a variant, is a type of nodular kale. Purple kale leaves are purplish-red, with waxy powder on the leaf surface and nearly rounded leaf bulbs. Nutritional components of purple kale include carbohydrates, protein, vitamins such as folic acid, ascorbic acid, vitamin A and tocopherols, and minerals such as copper, iron, selenium, calcium, manganese and zinc.