As we continue our explorations in food chemistry, we started looking at how much starch is in selected foods. Today we tested starch levels in rice, flour, apple, egg white, beef jerky, oat cereal, onion and coconut. Which ones do you think have starch? The results might surprise you!
Lily and Bailey are working hard to make a FAIR test. Ask your student what makes a fair test!
Ben and Amrit carefully are measuring egg whites into their plastic cups.
Yumi and Lilja (disguised as a mouse today! :)) are working great together and are deep in scientific thought!
Jack and Seiji are discussing some results.
Hayley is letting Lauren measure out the materials as she looks onto her tablemate's results.
Nico, Nathan, and Diego are all working hard to make equal measurements.
To test for starch we added two drops of iodine to each food substance. If there is starch present, there is a chemical change.... which ones do you see with a chemical change? Hint: Iodine starts brown but changes color! :) Students, help your family members with this one!
Here we can see that flour and oat cereal DEFINITELY have starch but egg whites don't! Did you know that?!
Ask your student which substances had starch present and write SS on their planner if they can tell you! :)
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