prepare red cabbage extract. use it as an indicator and test the following solutions with it glass cleaner, tamarind juice, vinegar, few drops of bleach, lemon juice, baking sida solution, drops of hot sauce, sour curd present your observation in the form of a table
Answers
Answer:
Curd, lemon juice, orange juice and vinegar taste sour. These substances taste sour because they contain acids. The chemical nature of such substances is acidic. The word acid comes from the Latin word acere which means sour. The acids in these substances are natural acids.
What about baking soda? Does it also taste sour? If not, what is its taste? Since, it does not taste sour it means, that it has no acids in it. It is bitter in taste. If you rub its solution between fingers, it feels soapy. Substances like these whichare bitter in taste and feel soapy on touching are known as bases. The nature of such substances is said to be basic.
If we cannot taste every substance,how do we find its nature?
Special type of substances are used to test whether a substance is acidic or basic. These substances are known as indicators. The indicators change their colour when added to a solution containing an acidic or a basic substance. Turmeric, litmus, china rosepetals (Gudhal), etc., are some of the naturally occurring indicators.
Explanation:
Explanation:
Chop the cabbage into small pieces until you have about 2 cups of chopped cabbage. ...
Filter out the plant material to obtain a red-purple-bluish colored liquid. ...
Pour about 50–100 mL of your red cabbage indicator into each 250 mL beaker.
Add various household solutions to your indicator until it changes color.