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Reagents, Compositions, Weight Loss

Dexter Perkins
University of North Dakota
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This is a short experimental study of several different reagents and what happens to them when they are heated to 110° and 1200° C.

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This exercise is designed for a mid/upper-level undergraduate geology course on the principles of mineralogy.

Skills and concepts that students must have mastered

Students should have knowledge of basic chemistry and of minerals equivalent to what they would learn in an introductory geology class.

How the activity is situated in the course

This activity is the 1st of 36 mineralogy exercises and is used at the beginning of the course.


Content/concepts goals for this activity

Higher order thinking skills goals for this activity

Other skills goals for this activity

Description of the activity/assignment

This is a short experimental study of what happens to aluminum hydroxide, silicic acid, magnesium oxide, and calcium carbonate (or reagents of instructors choice) when they are heated to 110 and 1200 degrees.

Be sure to have students save their samples for later use in a lab that introduces X-ray diffraction.

Determining whether students have met the goals

Student peer comparison of results reveals who has recieved the most reasonable results. Student reports may be evaluated for inclusion of measurements, description of experiment process, prediction of what might happen, description of what really happened, and comparison of other groups results.

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