100 Days of Science #53-- Iodine and Starch Experiments

We still had lots of iodine left after our color changing experiment and decided to test our foods for starch.  

Iodine will react with the starches in foods and turn black. 

First we decided on a few foods to test.  We used cooked ride, a small red potato, some lettuce, granulated sugar, bread, and an apple. 

We cut/ diced our foods and made sure to keep them separate from one another.  We also cleaned the knife between foods so we didn't cross contaminate. 

The potatoes are sliced in the middle and the apple is diced on the side.

Then one by one we began dropping just a few drops of iodine on each of our food samples.

The lettuce, apple, and sugar had no reactions.

While the potato, rice, and bread did.

My boys immediately began brainstorming ideas about what other foods we could use in this experiment!

I just love quick and easy science experiments like this.

Others in this series:

1.  Bernoulli's Principle

2.  Field Trip to the Ecotarium 
3.  Learning About Air Molecules

4.  Kitchen Science; Baking cupcakes

5.  Corn Maze Field Trip 

6.  Birds of Florida 

7.  Static foil drum

8.  Un-Make it Monday; Seeing Inside our DVD/VCR player

9. Wind Tunnel Experiment 

10. Biomes Marine Biology Center Field Trip  

11. Disappearing Coin Trick and the Science Behind it. 

12.  Snuff Out a Candle with Baking Soda and Vinegar

13.  Making Plastic from Milk
14.  Pencil in the Rice Friction Experiment
15 & 16.  Two Experiments using SNOW
17.  Making an Iceberg 

18.  Making an Egg Float

19.  Looking at Microscopic Organisms 

20.  Eco Plant pals

21&22.  Two Experiments with Cotton Candy
23. Springfield Science Museum Trip

24.  Teaching Children the Signs of Spring

25.  Color Changing Slime

26.  Growing Tickle Me Plants
27.  Learning About Soil Sampling
28.  Making Super Bouncy Balls 

29. Exploring the New England Shoreline
30.  Color Changing Flower Experiment 
31.  Roger Williams Zoo Trip
32.  Edible Silly Putty 
33.  Raising Tadpoles

34. More Microscope Fun

35. Making Homemade Ice Cream

36.  Observing Plants Breathe 

37.  Trip to Save the Bay Exploration Center and Aquarium

38. Making Fresh Peach Preserves 
39.  Making Solar S'mores

40.  Growing a Crystal Garden

41 & 42.  Jolly Rancher Candy Apples and Lollipops
43.  Volcanic Lemons 

44.  Oozing Pumpkins 
45.  Growing a Germ Farm
46.  Looking at the Germ Farm Under a Microscope

47 & 48.  Building Model Molecules Two Ways 

49.  Kitchen Chemistry Experiments 

50.  Fall Leaf Chromatography 

51.  Color Changing Experiments with Iodine

52.  Learning About Birds in Winter

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