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Looking Back: What happened? For this lab, we had to find out how much water the sodium polyacrylate could absorb before it turned into a liquid again. My group added a total of 600 ml of water to the 4 grams of sodium polyacrylate, in which we concluded that that was the amount of water it could abosob. I think our experiment turned out pretty cool, and we learned a good chunk of information that we did know. We tried many different things throughout this lab, like adding Gatorade to our sodium polyacrylate, food coloring, I even tried glue! Looking Beyond: What do you think has happened? What’s the science? I had one question when doing this lab and that was why didn't the sodium polyacrylate work well with the glue than it did with the water? And my hypotheses was that the glue had too much in it.. Too much for the sodium polyacrylate to work with. Later on I learned that the glue didn’t work as well as the water or Gatorade did because the glue molecules, and the molecules in the sodium polyacrylic, weren’t both polar covalent bonds. Meaning they didn't have a negative side and positive side. So the glue molecules didn't move with the sodium polyacrylate molecules, they separated. The water bonded with the sodium polyacrylic because the water molecules moved with the sodium molecules because of high and low pressure, which made the gel type thing. They both had a negative side and positive side. The Gatorade took a while for the sodium molecules to absorb but it did eventually. I think that was because the Gatorade had more molecules. Just my take on that. Not quite sure. Looking outward: Collaboration and Impact I got to work with a great group of people as always. Sophie, Hannah, Monique, Zoe, and Rebekah. We worked really good together, as usual. I liked that we worked through our questions and answered them through various ways. Looking Forward: What next? If I were to do this experiment again I would try different substances. Like milk, hot water, dry ice, etc. I think it would be cool to see what it would turn out, seeing that the glue came out pretty cool after I kept string it. Take Away: Polyacrylate is now in my Favorite Words category. Below is a slide of picture I took along the lab. This week Rebekah started making the tool we needed with my help. We started Wednesday and finished by Friday. We worked on our blogs in the beginning of the week. We even got to watch The Martian in class this week. We plan on making making our first motor next week.
Looking Back: What happened? For this lab my group and I mixed citric acid with water, then we began to add little pieces of magnesium. After adding the magnesium we covered the flask quickly with a balloon and it slowly began to inflate with hydrogen. The flask began to bubble and it was getting warmer and bubbled faster. The flask got so hot we had to get a seperate glass bowl type thing to place our flask in (which you can see in the last picture in the slideshow) When everyone's balloons filled up and the flasks cooled down Andrew (my chemistry) tied our balloons and we were ready to place it over a candle. It was cool to see everyones balloons blow up into flames. Looking Beyond: What do you think has happened? What’s the science? Throughout the experiment I was curious on what was in the magnesium that was one, making the water bubble, and two, making the water warm, then hot. I later on learned that the magnesium had citric acid, and by adding the magnesium it was giving the hydrogen extra electrons, which was making the gas. Looking Inward: Humans doing science I think our experiment went well. We got answers to our questions and completed the lab. I helped by adding the magnesium to the water. We collected hydrogen in the balloon from the magnesium, and it successfully blow up. Looking Outward: Collaboration and Impact For this lab I worked with Rebekah, Hannah, Monique and Zoe. I like the group I usually work with and do these experiments with. We do the same amount of work and put the same amount of effort. Looking Forward: What next? If I were to do this again I would want to maybe make our balloon bigger so it could have a bigger exposition... I just think that would be cool.
For this project I decided to work with Rebekah. We plan on splitting the work that needs to be done by interest. Building/crafting the rocket is going to be more me than Rebekah, building the motor is going to be more Rebkah than me, but other things like building the lunch pad and painting the rocket, and testing it out will be both of us. I'm really excited to see how our rocket will turn out. I have a good feeling that this will be a really good experience. I'm excited to build the rocket and all the other things that come after that.
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Fatuma Fadhil
Throughout this blog I will be posting all things Chemistry. Every post will be something I did/doing in my Chemistry Class |