mass of separating a mixture

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by HVstOK01
Last updated 5 years ago

Discipline:
Science
Subject:
Experiments
Grade:
8

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mass of separating a mixture

Mass of Separatd Solids

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Observations

Olivia Kochis, Caroline Phillips, Mike PhamPeriod #4

Conclusion:

Purpose: We separated our mixture into three pure substances.Claim: Our separation was somewhat successful. This is because before separating, the mass of the mixture was 42.01g. After separating the mixture, the mass of the three substances combined was 41.96g. This leaves us with 0.05g of lost data. Evidence that supports this is the masses. If you take 4.17g + 15.75g + 22.04g= 41.96g total.42.01g-41.96g= 0.05g lost.Although mass was lost, the total mass in the end was very close to the origional total mass in the beginning of the experiment.Substance Properties:Iron:magneticSalt: solubleSand:solid (doesn't change); nonsolubleThe characteristic properties helped us separate the mixture because.....-we were able to separate the iron by using a magnet-we were able to separate the sand by evaporating the water it was dissolved in -we were able to separate the sand by dissolving the salt out of the mixture and evaporating the water the sand was mixed with

1) Small test tubes2) Large test tubes3) Hot hands4) Evaporating dish5) Microburner6) Magnet7) Beakers8) Fliter paper9) Sand10) Iron11) Salt12) Water13) Microburner tubing14) Paper towels15) Scoopula16) Funnels17) Paper envelopes18) Electronic balance19) Safety goggles20) Lab apron21) Test tube rack

Materials

Iron:Mass of of iron in beaker OR test tube - Mass of beaker OR test tube67.04g - 62.87g4.17gSalt:Mass of evaporating dish with dissolved salt - Mass of evaporating dish229.89g - 214.14g15.75gSand:Mass of sand in beaker - Mass of beaker84.90g - 62.86g22.04g

Purpose:To separate a mixture of solids into three pure substances.

Procedure(s):

Sand and Salt:1. Place a piece of filter paper in a funnel.2. Place the funnel in a clamp over an evaporating dish. 3. Add fresh water to the sand in the filter paper and wait for the water to drip into the evaporating dish. 4. Continue to add fresh water to the sand until you feel the salt has been dissolved.5. Once the water has completely been separated, or dripped out, from the salt,place the filter paper with the sand over a test tube.6. After that, place the evaporating dish with the salt over a metal ring lined with wire mesh.7. Light the microburner and keep the flame under the dish.8. When the salt begins to spatter, remove from the heat and allow it to cool. 9. Use the hot hands to place the evaporating dish onto the balance and mass it. Record the mass. 10. Subtract the mass of the evaporating dish from the evaporating dish ith salt.11. Next, once the excess water has evaporated from the sand (please allow several hours or even days) pour the sand into an already massed beaker. 12. Mass the beaker with its contents.13. Subtract the mass of the beaker from the mass of the beaker with sand.Record the mass.

Iron:1. Pour sand, salt, and iron mixture into a wide bowl.2. Mass a beaker. Record it.3. Wrap a paper towel around a magnet.4. Slowly wave magnet over the mixture in order to attract the iron.5. Once the iron is attracted to the magnet, unwrap the magnet over a beaker.6. Repeat steps 3 and 4 until you believe all of the iron is separated.7. Mass the beaker with the iron shavings inside. Record it.8. Subtract the mass of the beaker from the mass of the beaker with the iron shavings.

Data Results:


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