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Activity
A Magnetic Meal
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Abstract
In this Activity, students make slurries of breakfast cereal and water and use a magnetic wand to collect elemental iron filings that are present in some cereals. They determine the mass of iron collected and then calculate the "recommended daily allowance"(RDA) in each cereal. An extension uses qualitative tests to confirm that the material collected is actually iron. This Activity connects chemistry to an item that students probably see (and eat!) often. Many students will find it surprising that metallic filings are present in a food item. The Activity can lead to a discussion of why iron is/is not used in food items in this form. Instructors can also discuss biochemical issues—what happens to iron in the body, why iron is a crucial nutrient, and the definition of RDA.
Keywords (Audience):
High School / Introductory ChemistryKeywords (Feature):
JCE Classroom ActivityKeywords (Subject):
Consumer ChemistryCiting Articles
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This article has been cited by 1 ACS Journal articles (1 most recent appear below).
Determination of Fe Content of Some Food Items by Flame Atomic Absorption Spectroscopy (FAAS): A Guided-Inquiry Learning Experience in Instrumental Analysis Laboratory
Sayo O. Fakayode, Angela G. King, Mamudu Yakubu, Abdul K. Mohammed, and David A. PollardJournal of Chemical Education2012 89 (1), 109-113Determination of Fe Content of Some Food Items by Flame Atomic Absorption Spectroscopy (FAAS): A Guided-Inquiry Learning Experience in Instrumental Analysis Laboratory
Sayo O. Fakayode, Angela G. King, Mamudu Yakubu, Abdul K. Mohammed, and David A. PollardJournal of Chemical Education2012 89 (1), 109-113This article presents a guided-inquiry (GI) hands-on determination of Fe in food samples including plantains, spinach, lima beans, oatmeal, Frosted Flakes cereal (generic), tilapia fish, and chicken using flame atomic absorption spectroscopy (FAAS). The ...
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History
- Received: August 03, 2009
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