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. Ecotarium Trip 
3. Air Molecule Experiment
4. Kitchen Science
5. Corn Maze Field Trip 
6. Birds of Florida 
7. Making Static Music
8. Un-Make It Monday
9. Wind Tunnel Experiment
10. Biomes Field Trip
11. Disappearing Coin Trip
12. Snuffing out a Candle With Baking Soda
13. Making Plastic from Milk
14. Friction Experiment 
15. & 16. Snow Experiments
17. Making an Iceberg
18. Floating Eggs
19. Pond Water Under a Microscope 
20. Planting Eco Plant Pals
21. & 22. Cotton Candy Experiments
23. Springfield Science Museum Trip
24. Signs of Spring
25. Color Changing Slime
26. Growing Our Own Tickle Plants
27. Learning About Soil Sampling
28. Making Bouncy Balls
29. Exploring the Shoreline
30. Color Changing Flowers
31. Roger Williams Zoo Trip
32. Edible Silly Putty 
33. Raising Tadpoles
34. More Microscope Fun 
35.  Homemade Ice Cream
36. How Plants Breathe Experiment 
37. Save The Bay Exploration Center Trip
38. Making Fresh Peach Preserves 
39. Making Solar S'mores
40. Growing a Crystal Garden
41. & 42. Making Jolly Rancher Candy Apples & Lollipops 
43. Volcanic Lemons
44. Oozing Pumpkins
45.  Growing a Germ Farm
46. Germs Under a Microscope
47. & 48. Making Model Molecules Two Ways
49. Kitchen Chemistry
50. Fall Leaf Chromatography

51. Color Changing Iodine Experiments

52. Learning About Birds in Winter
54. Flouride and Calcium Experiment
55. Botanical Gardens in Winter
56.  Making Cell Models
57. Which Has More Water; Ice or Snow?
58. Exploding Snow and Water Baggies
59.  Exploring Minerals
60. Visiting the Hartford Science Museum
61-63. 3 STEM Bridge Challenges
64. Making Models of the Earth
65. Plate Techtonics with Graham Crackers
66.  Homemade Lava Lamp
67.  Science Movies We're Watching
68. Index Card Towers
69.  Botany at the Botanical Gardens
70. Best Board Games for Science 
71. Homemade Frozen Yogurt Pops
72.  Starburst Rock Cycle 
73. & 74. Sinking a Marshmallow
75. Jumping Conversation Hearts 
76-78. Building a Paper Airplane 3 Ways 
79. Learning About Hummingbirds 
80.  Planting an Herb Garden 
81. Mushroom Spores 
82. - 84.  Penny Saturation Experiments 
85. Sink or Float?
86. Disappearing Ink 
87. Sedment Layer Jars
88. Tie Dye Science 
89-91. DNA Experiments 
92.  Homemade Butter 
93. Floating Marker Art 
94. & 95. Oil Spills & Water Filtration 
96.- 98. Making Rock Candy & Rock Candy Experiments 
99. Rocket Science 

100. Permaculture Garden Tour