Experiment 8:
Which is the smallest quantity of sugar that tastes sweet?
* Weigh exactly 1 g = 1000 milligrams (mg) of sugar.
* Put this sample into a vial.
   The vial has a marking at 2 ml.
* Add water until its surface is at the 2-ml mark.
* Close by a stopper and shake until the sugar is
   fully dissolved.
* Left: Remove 0.2 ml of this solution with a syringe.
* This quantity contains 0.1 g = 100 mg sugar. Transfer it into the next vial,
   add water until its surface is at the 2-ml mark. Close and shake.
* Remove 0.2 ml of this second solution with a syringe.
* This quantity contains 10 mg sugar. Transfer it into the third vial,
   add water until its surface is at the 2-ml mark. Close and shake.
   0.2 ml of this third solution contains only 1 mg sugar.
* Right: This vial contains 2 ml water without any sugar.
   Remove 0.2 ml of water and put it on your tongue.
   Test 0.2-ml samples with 1 mg sugar.
* Which is the smallest quantity of sugar that tastes sweet?

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Compare other sugars present in the kitchen:       Experiment 9                                          back