For this lab we took different metals from the earth and tested to see what different colors it makes over a Bunsen Burner. What I learned from this was, that Potassium (k) makes the color purple, Lithium Chloride (Li) turns the fire to the color red, Strontium Carbonate (Sr) makes the fire turn the color red/orange, Cupric Sulfate (Cv) makes the color green, Sodium Chloride (Na) turns the fire to the color orange, Boron (B) makes the fire turn the color green, Magnesium (Mo) makes the color white, Iron (Fe) turn the color orange. This all happens because the fire is reacting to all the chemicals and minerals that I had just previously mentioned. This information may be used to answer the question, "whats the effect of energy on elements?" What I believe went well was that we made the reactions happen, we took all the materials and had a pretty successful experiment. The problems were that first, we had to change Bunsen Burners because the original one sucked at it's job, second there was residue from previous flame lab experiments so that kinda interfered with our experiment, third we had the lights on so we couldn't really see the fire change color until we turned the lights off. For this experiment I think my group and I performed really well, we did have some setbacks but it didn't affect our group in total. If I had a second chance I would test the Bunsen burners before the day of the experiment to which is the best one. Then on the day of the experiment I would all the lights off so I could see the fire change colors better. I wouldn't change or trade my group in for anybody those group of people are the same people I would do the experiment 100 times over and over again. One way of continuing the experiment is making all the flames into a fire tornado and see how that works. And see how all the different color flames combined spinning and twirling, what type of color it would be i'm guessing black that would be awesome.
One day Micah was thinking he, was wondering if Coke & Mentos would work in a stomach. So he looked up some videos and it seemed that it worked but, controversy arose and seemed to be fake. He looked researched more into the subject and found out that the myth is false. He decided to test it for himself so he could prove if it was real, but this task was to great for one man. So he built the ultimate team including me to find out if this myth is real or fake...
I chose this lab because I thought that this lab would be a good starting place for me moving forward. I learned where equipment was and learned how to use some of it. I was hoping to find out a little more on volume because, I struggle with that topic when it comes down to the math. I didn't really find it that difficult for me I had my peers to rely on and, Amanda was a big help to my group as well, she helped us a lot with our excel document. I felt that you needed to know how to use a scale, what water volume is when it's in a dry cup, and when its in a measuring cup. It wasn't really hard or confusing it was just a lot of work that needed to be done. Based on my data I can conclude that the volumetric flask is the most accurate piece of equipment out of the four my group and I have tested. I know this because the volumetric flask has the lowest percent error of all the equipment. The most precise piece of equipment is the volumetric flask. I know this because the R^2 value is the closest to 1 in the graphs I made in excel. The R^2 value represents the closeness of the measurement to one another so the most precise equipment must be the one with the a R^2 value close to 1. Based on my finding I can say that the volumetric flask will bring the best overall measurements. I feel this way because the volumetric flask was the most precise and accurate in my experiment; I also feel that the volumetric flask alleviates as much human error as possible. I feel the only thing that contributed to any inconsistencies or error were all human errors. I believe my group and I did all of our calculations correctly but we may have made mistakes while filling the instruments. It is very easy to make a mistake, you can't do everything perfect.
For this one lab section we ran experiments to observe sublimation and learned about phase changes. We did these experiments so we could calculate how much bigger a solid becomes once it becomes a gas. It started with Andrew taking a big chunk of dry ice and showing us how it works. With the dry ice he broke in smaller pieces to give to us, we took a large beaker and filled it with water. Then took the piece of dry ice and broke it in even smaller pieces, and took one of those pieces and dropped it in the water. The result was smoke coming from the beaker that resulted by dropping dry ice in it, this is called sublimation. Finally when we put our dry ice into a balloon it showed us that the balloon was 8 1/2 centimeters We divided the diameter in two to find the radius, then imputed the information in the formula for volume of a sphere (4/3πr^3). And plugged it into the equation for the volume of a sphere I got the ratio 1: 321.555. Here are some pictures from the lab.
As the first experiment of the class we made oobleck. We observed the difference between a solid and a liquid. In the process we mixed the solid and liquid with, sugar, spice, and everything nice. As a group we all thought that it was a liquid so that's what we believed. The more we mixed it though the more we started to realize that it also has a solid shape. We realized that if you just stick your finger in the oobleck it starts to separate. But if you try and force yourself through the oobleck then it starts to take a solid shape and becomes solid. Towards the end of the experiment our table was 50/50 between whether it was a liquid or a solid. I believe that it is both and it's both and at times the matter in the oobleck can change.
Today we watched a interview between Steven Colbert and Neil Degrasse Tyson on science. Here is the link if you want to see it------> https://www.youtube.com/watch?v=YXh9RQCvxmg
As your first assignment, choose a quote from the video that strikes you, or causes you to stop and think.
For my quote I chose, "People don't like science because they don't understand it, science is all about trying to know, what you don't know." I chose this quote |
AuthorHello my name is Joshua Roberts, I am a 10th grade student at High Tech High. This is my chemistry blog where I will post all my work. Archives |