Heterogeneous and Homogeneous Mixtures

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A chemistry experiment demonstrates how to tell the difference between heterogeneous mixtures and homogeneous mixtures using a flashlight.
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what is the problem for this experiment? i couldnt really figure it out

DonkeyScratcher
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Hi. You eventually used the term scattering for air bubbles in alcohol. Why did you resort to "impurities" to explain the interface was visible? That was scattering, the same, due to differences in refraction coefficients.

AlfredoTifi