Soil Evidence

The lab we did today was a little bit confusing. We were looking at the soil samples with the naked eye, with UV lights, and under microscopes. The heating of the soil didn't result in anything (as far as we could see), and I can't really make anything out of it except when we used the UV lights and found fluorescent particles within some of the soil. I could also see where everything was headed when we try to find the acidity of the soil with the universal indicator, the result was pretty obvious when one turned red (indicating that it is a acid), and some turned green (indicating that it is neutral). The chemical reaction part didn't work out too well either, as all we saw was the change in color which is meant to happen. The density check for the soil was pretty obvious though, even if though it didn't result anything (-.-).