Experiments

Starch in the yogurt? Starch is not poisonous and used as food. Content in yogurt, however, is

unacceptable.

3 samples of yogurt

Add iodine to each of them

Sample, which contains blue-violet coloration contain starch

Separate salt from beans-2 ways

1st way- 2nd way

Vitamin C

Vitamin C is oxidized quickly even by iodine. This redox reaction is basically a method for determining the amount of vitamin C.

Measure voltage using fruits

Relationship between nitrate and chlorophyll in green leaves.