For our lab activity at Pusat Sains Negara, we did the following activities / experiments.
1) Testing for Starch
2) Testing whether a substance is acidic, alkaline or neutral
3) From Flower to Star
4) Flower blossom
1) Testing for Starch
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Scooping items into the micro well to test for starch - We tested sugar, wheat flour, corn flour, biscuit and baking powder by putting one or two drops of iodine solution into the micro well.
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| Squeezing iodine drops |
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| If starch is present, the substance will turn dark blue / black. |
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2) Testing whether a substance is acidic, alkaline or neutral
Substance for testing: vinegar, detergent, toothpaste, sugar, lime juice, salt, shampoo and baking powder