A trace evidence analyst places crystals of an unidentified white powder onto the stage of a polarizing microscope and observes the crystals through the eyepiece.Under correct focus, some of the crystals show brightcolors while others appear very dark and hardly distinguishable. What can be concluded about the contents ofthe white powder?
A trace evidence analyst places crystals of an unidentified white powder onto the stage of a polarizing microscope and observes the crystals through the eyepiece.Under correct focus, some of the crystals show brightcolors while others appear very dark and hardly distinguishable. What can be concluded about the contents ofthe white powder?
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter7: Ionic Compounds And Metals
Section: Chapter Questions
Problem 131A
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A trace evidence analyst places crystals of an unidentified white powder onto the stage of a polarizing microscope and observes the crystals through the eyepiece.
Under correct focus, some of the crystals show bright
colors while others appear very dark and hardly distinguishable. What can be concluded about the contents of
the white powder?
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