Question

question 2
why is water tested also when testing for carbohydrates?
it is the experimental group since water contains carbohydrates.
it is the control group since water doesnt contain carbohydrates.
you always test water when doing an experiment.
what chemical indicator is used to test for the presence of carbohydrates?
iodine
water
hydrogen peroxide

Explanation:

For the first question, water is tested as a control in carbohydrate - testing experiments. A control group helps to establish a baseline to compare results against, ensuring that any positive results are due to the presence of carbohydrates and not other factors. For the second question, iodine is commonly used as a chemical indicator to test for the presence of starch, a type of carbohydrate. Starch reacts with iodine to form a blue - black complex.

Answer:

Question 2: It is the control group since water doesn't contain carbohydrates.
Question 3: iodine