MMJ

Michael B  Maggie H   Jenna O   Step 1: Oil Filtration 175/205x100= 85% Step 2: Sand Filtration: 173/175x100= 98% Second time: 150/173x100=86% NOTES: Before Treatment: Volume: 205 mL - There is stiff sticking to the inside of the water bottle, its black. - It smells like garlic - it's a brownish yellow color - It looks oily After Oily Water Seperation: Volume: 175 mL - All the oil is gone - Most of the black specks went to the bottom - It is a brownish yellow color - Still smells like garlic After Sand Filtration: Volume: 173 mL - More yellow orange color instead of yellow brown - Still smells like garlic just not as much - Sand smells like garlic Second time: Volume: 150 mL - Still sand but not as much - Yellowish color - No black specs Charcoal Treatment: Volume: N/a - the water turned black - You can't see the sand - You can not smell the garlic odor anymore Volume: - 168 mL - It was a bit blurry but mostly clear Final Product  Analysis

Purifying water can be very tough due to all the procedures that have to be done. If one mistake is made through out the experiment it is vital to start from the beginning once again. The objective of the experiment was to purify contaminated water. At first we believed that it was going to be a **homogenous mixture** but we were proven wrong. It turned out to be a **heterogenous compound**. We faced many obstacles through out examination such as starting over again. We had to make sure that the water was being cleaned out a layer of waste at a time. The lengthy process was complicated but was also very interesting. During the step by step process everything had to be done cautiously and with care. Step one of the experiment consisted of polluted water. The water **solution ** had a brownish yellow color to it with an oily substance and black specks in it. The water was more **dense** then the oil so the water went to the bottom of the beaker. The oil was less dense then the water so it went to the top. After the oil filtration there was 85% of the water left in the bottle. Then after we completed removing the top layer of oil from the substance, the water was beginning to look cleaner. The physical change of this step was obvious and the water looked much better then the previous state. That step was efficient because the clarity of the water improved exceedingly and it took very little time at all. I found this step to be fairly important because if we did not remove the oil this way it would have been more difficult to remove it later on in the process. For the next step, we continued on to sand filtration. The objective of this was to remove all particles from the dirty water. As we continued to **filtrate ** it was found to be very difficult due to the fact that the sand kept leaking into our water. The first time we proceeded with the sand filtration there was 98% water that was left. We were forced to do this experiment twice, causing us to lose both water and time. Once we completed the sand filtration the first time we had to redo it and then measured 86% water left in the bottle. After we finished the sand filtration, our next step was to mix charcoal into the water. This took very little time at all due to the fact that all we had to do was mix in the charcoal and let it sit over night. We found this step to be the easiest of them all because it took no time if any. The last and final step was the filtration. I found this to be the hardest step of all because our water wouldn’t cooperate. We were forced to have to filtrate the water quite a few times because the charcoal kept leaking into the water and leaving traces of black. This step also takes the longest of all because the water filtrates slowly and we had to do this step over again on our “clean” water because of the black traces. I found this step to be efficient when finished, but a waste of time and water because of the need to purify it many times. Through out the experiment we made the water undergo a **physical change **. This was done taking each step at a time. Even though we removed all of the contaminated substances, there are a chance that **atoms** and **elements** are left in the water because they are so small that they were probably not removed during filtration. There were no chemical changes during the process and no **chemical properties** that we observed, but we did see some **physical properties**. The water did change throughout the process so there were physical properties. The physical change only happens if a **chemical change** has happened. In conclusion, after the multiple steps and challenges we faced our water ended up being clear and purified. Jenna and Maggie worked on the analysis and sheet together on google docs. Jenna: did the yeild Maggie: Vocabulary Michael worked on the experiment.