Karen A. Beitler
Materials: Vegetable slices; Carrots (larger are easier to slice), zucchini, cucumber, radishes, toothpicks, spaghetti (uncooked), paper plates, napkins, plastic knives.
Formulas: Key:
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Water H2O
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Hydrogen - carrots
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Carbohydrate C
6
H
12
O
6
(glucose)
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Carbon - zucchini
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Protein NH
2
-CH
2
-COOH (glycine)
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Oxygen - cucumber
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Lipid CH
3
(CH
2
)
10
CO
2
H (lauric acid)
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Nitrogen - radishes
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1.
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Slice vegetable in thin slices, less than 1 cm.
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2.
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Use the vegetables to make each molecule on your plate.
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3.
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Use the toothpick to 'stick' holes in the vegetable slice where bonds should be.
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4.
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Insert a piece of spaghetti to show the number of bonds.
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5.
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Attach molecules until you have made a macromolecule.
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6.
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Remember to check the formula; sometimes a drawing does not have a label for all the molecules present.
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7.
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Count the number of each atom in the formula and then check that your model has the same number of molecules.
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8.
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You can eat each molecule after it is checked for accuracy by your teacher.
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Lipid - Lauric Acid
http://images.google.com/imgres?imgurl=http://upload.wikimedia.org/wikipedia/commons/7/7fLauric_acid.png&imgrefurl=http://commons.wikimedia.org/wiki/
--------------------------------------------Cut here and hand in for grading-------------------------
Teacher check sheet Student Name __________________
What did the molecules have in common?
What was different about the molecules?
