What is separation? Separation is pulling things apart by size and color, taking things apart that are mixed. In our first lab we had a mixture of black sand, iron, marble chips, and calcium chloride. We put 15 grams of each into a beaker. We traded with another group who had a different mixture. When we got the other group's beaker we started to filter out the big rocks which were marble chips and boiling stones. After we got them out we started to pick out the boiling stones which had a different shape and color as the marble chips. After that we had the black sand and iron mixed together. This was pretty fun to separate because we ran a magnet through the two substances and the iron stuck to the magnet. We put the iron into a different beaker. After all the substances were separated we weighted each one. The black sand wighted 9.36 grams, marble chips 10.5 grams, iron 11.25 grams, and the boiling stones 7.95 grams. After we separated all of them they didn't weigh the same and before, I am not sure why but I think you lose some of the substances as you separate them. You always have to take your time or you can lose a lot more and your measurements will be way off. This lab was very interesting and it helped you learn how to use separation.
In the second lab we got different colors and drew on a filter paper. After you drew you poked a hole in the center of the paper. Then you put a piece of paper towel in the hole and put it in water. After a while the colors started separating. The dark colors stayed in the middle of the paper as the light colors started to move out. The lighter molecules in the light color were easier to move out and the darker color molecules were heavier which made them stay in the middle. This was very cool to see all the colors separate from one another. The water was the main key of separation in this lab. In the first lab we physically separated each little substance by hand but in the second lab we used water to separate the colors.
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