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ours workedwhat worked about my fiter is that it abousoded the salt so then when the water took over it abousided soooo ya

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What worked for my table group was salt,paper towel and some activated charcoal.
I think it worked very well. My group first put water in the cup then we put our contaminant(salt) in the cup than we put our first filter layer(paper towel) and placed it on top of our coke bottle. We then took our second filter layer(activated charcoal) and then poured the water and the contaminant through. The paper towel and the activated charcoal captured the salt and took away the contaminant.

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My group used Activated charcoal, Paper towel, and Salt. The salt helped with the charcoal to start bubbling and later when we keep reusing the water the charcoal and the salt started disappearing and started getting clear

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one thing that worked about my table groups filter was. The cotton balls really helped by soaking up all of the bits of salt. Another thing that worked well was the salt contaminant because it had bigger pieces of salt and that was easier for the cotton balls to soak it up.

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one thing that worked about my table groups filter was. The cotton balls really helped by soaking up all of the bits of salt. Another thing that worked well was the salt contaminant because it had bigger pieces of salt and that was easier for the cotton balls to soak it up.

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Zac A

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One thing that worked was the cheese cloth because it let the water down but not the charcoal down.

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our filter didn't work  the items we used was food coloring cheescloth and activated Charcoal and the food coloring was green and i think we should have used salt becuase it would dissovled better then the green food coloring.

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What worked and what didn't work - Carter .

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What worked and what didn't work - Carter .

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One thing that sorta' worked was the cotton balls. They sorta' worked because when we observed the water with the food coloring before we poured it it was dark blue but when we poured the water with the food coloring in the cotton balls sucked in all of the water and left the food coloring to go through when it didn't have as much as it did when we started so the water got darker blue. Another thing that didn't work was the paper towel, the paper towel when we poured it sucked all of the water up so the paper towel got top heavy and the water started dripping off the paper towel. But the cotton balls might have worked because they still separated the water from the food coloring even though the water went into the filters it still separated the two substances.

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For us what really worked for filtering out the salt was the cheese cloth. The cheese cloth was effective because of all the little holes it had and because of its ability to stretch. One more thing that helped us was the activated charcoal because it held the salt in one spot for the whole time. For these reasons our filter worked.

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I think that our filter did not work very well. The filter we made was out of a coffee filter, and activated charcoal. The problem was that the coffee filter soaked up a little of the food coloring, but the activated charcoal made the water darker, and little particles came down into the water too. This happened every time we did it, so I think if we had the cotton balls instead of the charcoal it would have worked better.

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Our filter did work but I don´t think that it would continue working because when we kept adding the water the salt sank more and more into the charcoal which would fall into the water eventually. If I could change one thing I would change the charcoal out for the cotton balls because I think that they would trap the salt as it got more wet.

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Dominic what worked and what didn't work

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Dominic what worked and what didn't work

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We used food coloring, coffee filters, and cotton balls. The coffee filters worked well because it did a good job holding the cotton balls and not getting wet. The cotton balls didn't absorb the food coloring. It was hard to take out the food coloring. Overall ours didn't work.

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Our water filter worked really well because of the cheese cloth. The cheesecloth really helped because of the tiny holes, we overlapped the holes to make them even smaller.  The small holes did not let the activated charcoal through but let some of the salt in. The cheesecloth has an amazing ability to stretch and mold to the object/thing that it is trying to mold to.

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The items we used were charcoal and food coloring. Ours unfortunatly did not work because we used the green food coloring as the contaniment and the activated charcoal as the second filter layer. All that ours did was make the water a very dark green. So unfortunaty ours did not work because I think we just did not choose the right items.

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Even though i was not there for the lab, I think we should of used a different contaminant like salt because it would of dissouled well rather then the food coloring because after putting it in it was probably very hard to take out.

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What worked/ What didn't work. Vinny Sindoni

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What worked/ What didn't work. Vinny Sindoni

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I think the coffee filter worked at getting a little of the food coloring out, but the activated charcoal just made it to dark for the coffee filter to get the color out. I think if we changed the food coloring into salt water our filter would have worked because the coffee filter would have done it's job and the activated charcoal would have also soaked up the salt.

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One thing that worked was cotton balls. The cotton balls worked because the cotton sucked in most of the water so it was less water to change. My filter didn't work because the coffee filter didn't do anything it just sucked in the water just like the cotton balls did. However it might have worked with cheesecloth because the color might get stuck in the little holes making the water more clear. Another idea is making the water a lighter color so you don't have to do as much work.

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what we used is salt, a paper towel, and cotton balls,

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We used charcoal and paper towel but the charcoal worked the best because it filtered the salt and there was no salt left at the end

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The thing that worked for my filter was that we used salt and paper towels and cotton balls, and surprisingly, there was less salt when we filtered the water. We still had to do it many times until we finished the trials, and after that, the water was nearly perfect. However, it still didn't work very well because the paper towels had a bit of big holes that the salt might have went through, and there was less water everytime we filtered the water. Our group thinks that we should have used the coffee filter because the coffee filter has smaller holes than paper towels, and it would be more suitable for the salt since the holes are smaller. The salt would probably be filtered out with the coffee filter.

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My filter worked very well with the contaminant. When my group finished with the contaminant, there was like one spec of salt left. One thing I would change would be to not have the paper towel and change it with cheesecloth. The paper towel was just a little to thin.

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The filters we used were charcole and paper towels. We chose as our contaminamt salt. I think our charcole was the most effective because the salt just slipped through the coffee filter. After 5 attepemts, the water was perfectly clear

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The  things that worked for my group were the cotton balls, the paper towels, and the food coloring because they did not filter it. So that's why I think that we choose the  wrong miterlies.

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for us what ri

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The filter did not work because the cotton balls soaked up the food coloring and just made it darker and less of it. Also the paper towels got soaked up.  That happened because the water was not able to go through it.

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Our group's did not work we used food coloring, paper towels, and cotton balls. We think that it did not work because the cotton balls and paper towels soaked up the water instead of filtering it. I think that the food coloring was hard to filter.

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My filter did not work because the cotton balls and coffee filter just absorbed the water and food coloring, and it just did not work, but if we replaced cotton balls with sand I think it would work better.