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Mixture Separation Lab Report

1072 Words5 Pages

Mixture Separation
October 6, 2015
Sasha Crowley
Harrison Rossi

Purpose The purpose of the laboratory was to determine the physical properties of four substances, then to separate a mixture of the substances based on their physical properties with limited amounts of materials available.

Hypothesis At the beginning of preparing for the lab, I believed that the poppy seeds would float when put in water due to them being very small and light. Salt would dissolve when put in water because "water can dissolve salt due to the positive part of water molecules attracting the negative chloride ions and the negative part of water molecules attracts the positive sodium ions." Sand would sink to the bottom of the petri-dish filled …show more content…

In the first step of mixture separation,empty the mixture into a Petri dish filled with distilled water. Then stir them all together. Make sure the salt has dissolved. Pick up your magnet wrapped with its covering, and bring it over the top of the Petri dish. The iron filings should attract to the magnet. Next, using the plastic spoon, scoop the poppy seeds out of the dish a few at a time. The next step in separating the mixture is to set up your filter funnel. The filter funnel must have filter paper inside the cone shape or it will not work. To put the filter paper in the funnel, fold the circular paper in half, twice. Then pull three edges away from one edge and place inside the funnel. Squirt some distilled water onto the paper so it will stick. Place a beaker under the edge of the funnel to catch the water. For the final step, pour the remaining mixture components retained in the Petri dish into the filter funnel. Wait for the components to filter out into the …show more content…

I would rate our lab at about a 6-7 based on how well we did. Not all the poppy seeds floated as we had predicted all of them would have floated. The sand took longer than expected to be filtered out of the water. The steps we had to do the lab with should have been more elaborate and detailed. We should have planned ahead more than we had. If we could do the lab over again, I would chose to re-write a well detailed plan that even a person oblivious to separating mixtures could follow. I would also extend the time period we had received to do the

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