Tools-
  • Large sifter(big enough for salt to sift through)
  • small sifter(small enough to keep salt on top),
  • very small sifter(so small that sand cannot fit through),
  • powerful magnet,
  • spoon,
  • tweezers,
  • 4 beakers medium size
Procedure-
1.)With the large sifter everything besides the wood shaving will go through.
2.)Then with the small sifter the iron filings and the sand will fall and that will separate the salt.
3.)Then with the very small sifter we will separate the sand and iron filings because the iron filing are very small and will
fall through.
4.)To get all of the iron separated, a magnet will pull it up out of the sand and salt.
5.)The tweezers will help get all of the wood out and the big pieces of sand out in the salt.
6.)4 Beakers are for putting the 4 materials in.


Data





Substances and Their Weights
Substances
Sand
Salt
Wood
Iron
Weight before Mixing(g)
15
15
15
5
Weight after separation(g)
15.3
6.4
14.3
5.05

Analysis
There are many improvements that could make this process a lot easier than it was the first time around. First of all it would have been easier by putting more thought into coming up with supplies. It would've been a little easier with a little more thought put into it so that we could have come up with many more tools that are very important that we had to wait for when we came in the next day while we were stuck with not much to do for roughly 15 minutes. The process was still very successful the way that it was done. Another improvement that could have been made was how the time was used during the two class periods. A lot of time was wasted that shouldn't have been. The measurements before and after were also a problem. They were not equal in most cases. There are many reasons for most miscalculations. With the sand it was very hard to separate the salt and the sand because they are both very small and the salt can hide in all of that sand. Most of the salt that is missing ended up with the sand, with a little more time more salt separated from the sand, but time was limited. A little salt also might have ended up in the iron and the wood. The wood is not very precise because some ended up in the sand and also on the table and on the floor because we spilled a little and could not regain all of it, most of it but not all. Another mistake that was made was that only 10 grams of wood was needed not 15 grams. Once this problem came up it was too late because class was almost over so we just kept the 15 grams in there instead of 10 grams.


Conclusions
In this experiment sand(15 grams), wood shavings(15 grams), salt(15 grams), and iron filings(5 grams) were mixed together together all in 1 beaker. Then we had to separate the the substances using the materials that we needed into 4 cups/ beakers. This experiment was very successful. Even though we didn't end up with all of the substances that we started out with and even though we didn't get every last piece together with the rest of its kind. The materials that were used in the separation lab were 3 sifters(1 large, 1 medium and 1 very small), a ruler, a magnet, a spoon, and tweezers. Most of the substances ended up with their kind especially with the sand and iron. Most of the wood and low on salt. Most of the salt ended up with the sand and some of our wood was lost and mostly all the rest off the substances were together and precise. Not using water and all of those complicated materials was a good idea because it would've been way messier and the wood and iron would have changed form and the salt would've disintegrated. The salt can come back by boiling off all on the water but that takes a while and the salt doesn't come back to its original shape and size. Keeping everything dry was a better method and probably would be the best idea. It was also easier using simple materials for the separation because we didn't need to dry everything out and nothing gained weight so everything was just that much more precise. In this experiment the best idea would have been to keep everything dry, not waste any time and to get all of the necessary materials on the first day and not to forget some and be stuck with not much to do for 15 minutes of valuable time.