Composition+of+Rocks

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====A student has a black rock that does not reflect light. The student cuts it open and the inside is the same as the outside. Can the student determine if this rock contains iron simply by looking at it? ====

E. No. The student cannot look at the rock since it does not reflect light and is therefore invisible.
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Question Identifier: GCI_2011_084 Designed for: //Non-Science Majors// Primary Author(s): //J. Libarkin, S. Anderson// Contributing Author(s): Misconception's Reference: //Original GCI (https://www.msu.edu/~libarkin/GCI_PUBLICATIONS.html)// Notes: //This question is NOT appropriate for students who are familiar with optical mineralogy techniques.//

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