* Powdered Starch
* Beakers or tumblers
* several fruits and vegetables
* Dextrostik or Clinitest (to test sugar)
* Iodine
* Sugar (Karo syrup)
Procedure:
1) Put a teaspoonful of starch in one beaker of water and a teaspoonful of sugar in a second beaker of water. Stir both solutions.
2) Test for starch with Iodine and sugar with Clinitest tablets or Destrostik strips.
3) Test several fruits and vegetables for starch and sugar.
 |
| L-R: Sugar; starch |
 |
| Testing for Starch L-R: potato, apple, pineapple, carrots |
 |
| Testing for Sugar L-R: apple, pineapple, carrots, potato |
Findings:
* The beaker with starch turned blue.
* The strip turned green when dipped in the beaker with sugar.
* Potato, carrots, apple turned blue when tested with iodine. Pineapple had no reaction.
* Potato and apple showed changed color on their respective strips. While carrots and pineapple did not.
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