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Sludge Test Lab Report.

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Sludge Test Lab Report Eric Walk Michael Cruz Science 8 Mr. C. Johnson We hope to accurately separate a test tube of "sludge", by firstly, separating the different substances and by secondly, testing the individual substances for their characteristic properties. We used the following apparatuses to fulfill our above hypothesis: Micro-Burner, Ring Stand, Spoonula, Forceps, Chemical Spoon, Tongs, Sparky, Burette Clamp, Test Tube Holder, Screen W/Ceramic Circle, Evaporating Dish, 600mL Beaker, Lg. Test Tube, Sm. Test Tube, Lg. Stopper, Sm. Stopper, Lg. Stopper W/Hole(s), Sm. Stopper W/Hole(s), Tape, Filter Paper, Funnel, Paper Towel, Condensation Apparatus, Distillation Apparatus, Pen, Sieve, Triple Beam Balance, Internet, Calculator. Examine sludge in its original container. Draw detailed illustration of the shape, size and color of the layers. Mass a single piece of filter paper. Set up filtration apparatus. Separate solids from liquids in the sludge by means of filtration. ...read more.


Then filter the solution. Record all observations. Mass an evaporation dish and put the solution in to the dish and set up the apparatus. Evaporate the water away. Mass the evaporating dish with the solid in it and subtract the mass of the dish. Record all observations. Put the solid left in the dish into a test tube with just enough water to dissolve it all. Boil away half of the water and quickly stopper and let cool slowly. After the solid recrystallizes examine it to help identify the solid. Record all observations. OR IF there is a small piece of metal found in the sieving put it into the middle of the flame to identify it by the color the flame turns.). Mass another set of boiling chips and put them into a test tube with the liquid. Set up distillation apparatus and fractionally distill the liquid. ...read more.


We began to sieve and noticed a small piece of metal. We burned the piece of metal and it burned green. We then fractionally distilled the liquid and were left with disgusting green goo. We then noticed that our white solid had sand and yellow stuff in it. We added water and filtered out the other solids, so we re crystallized the white solid and found that the crystals looked like salt. This is our final data chart: Substance Name Chemical Symbol Mass Sulfur S 3.5 Salt NaCl 5.8 Sand SiO2 .71 Copper Cu 3.916 Silica Si 7.967 Moth Flakes C10H8 5.951 Propanol C3O7OH 6.769 TOTAL MASS: 34.613 In completing our sludge test we made one fatal error that I recognize, we took sloppy and hard to reinterperet notes. Thus, we conclude that we have separated the "sludge" to the best of our accuracy; by using many of the techniques in our chemistry book; i.e. fractional distillation and fractional crystallization. ...read more.

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