Separating a Mixture of Elements and Compounds Data Tables
Intro: In this lab, properties of elements, and compounds and their reactions will be observed. Also, mixtures will be separated physically. This lab is also reviewing the names of elements and their symbols.
Materials: Iron fillings, zinc, sand, water, 250 mL beaker, 400 mL beaker, balance, pencil, filter paper, funnel, hot plate, iron ring, ring stand screen, stirring rod, weigh boat, magnet, Chloride Dehydrate, Aluminum foil, copper, paper
First, weigh about 5 g of iron fillings, mossy zinc, sand and sodium chloride. Use a separate piece of weighing paper for each. Record the exact mass of the materials to the nearest tenth of a gram. Then, observe the four substances and record their physical properties, also check to see if the substances are magnetic. Combine the substances in a 400 mL beaker and record the observations of the mixture. Then, pour the prepared mixture onto a sheet of notebook paper. Put a magnet under the paper to move the magnetic materials to the other side of the paper, then find the mass of the magnetic material. Place a screen on a 400 mL beaker and pour the mixture with the nonmagnetic material through the screen. Sift the mixture and collect the material that
did not pass through the screen and remass it on the balance, then identify the material.
Then, add about 50 mL of distilled water to the beaker containing the remaining mixture and swirl the beaker. Test the conductivity of the pure distilled water and mixture. Weigh a piece of filter paper and 250 mL beaker. Place the beaker under the funnel and make sure that no material is poured over the edge of the filter paper. Rinse the beaker, and pour the rinse into the funnel. Observe the contents of the beaker and filter paper. Then, remove the filter paper from funnel, unfold it and let it dry overnight. Identify the material, and when dry weigh the separated material on the filter paper. Also, calculate the mass of the dry separated material. Place a 250 mL beaker on a hot plate at medium heat. Allow for most of the liquid to evaporate, but turn the heat down if splattering occurs. When only a small bit of liquid is left, turn off heat and allow the liquid to evaporate. When the beaker is cool and dry examine the contents, identify the material, and record the observations. Then, weigh the beaker plus the separated material and record its mass. Calculate the separated material and transfer the mass.
Obtain a square of aluminum foil that is about 3 by 3 inches. Record any observations you have about the foil. Weigh about 3 grams of copper chloride and record its mass to the nearest tenth of a gram. Then, transfer the copper chloride to a 250 mL beaker, and record observations. Use a graduated cylinder to measure about 20 mL of distilled water and record any observations. Add the water to the beaker containing the copper chloride and stir. Loosely crumbled the square of aluminum foil and add it to the beaker.
Take care not to wad up the foil all the way or else there will be less exposed surface
area. Observe reaction and record immediate observations. Stir and continue observing until reaction is complete.
Data Table 1 Yield
Initial Mass in
Final mass in
Grams (After separating) Percent Yield
Data Table 2 Observations Before Mixing Substance
Observations of Physical Properties
Magnetic, grey, shining, soft, it separates when over a magnet
solid, grey, hard, rocklike, inconsistent shape, holes, rough, large particles
rough, beige, small particles, non magnetic Sodium Chloride
White, small particles, soft, non magnetic
Data Table 3