MSED 250

 This week my classmates and I were able to further our understanding on pH levels and how they change from substance to substance. In addition to this lab we were able to participate in a virtual experiment that allowed us to observe the pH balance of different liquids while changing the conditions. Materials:  4 tarnished pennies Vinegar, water, baking soda, lemon juice, ammonia 5 small cups Stirring rods pH strips Lab:  The objective of this lab was to monitor the pH level of the liquids, and it's relationship to the pennies. To begin my partner and I poured vinegar, water, baking soda, lemon juice, and ammonia into 5 small cups then placed the pennies inside. Next we used the pH strips to test the levels while the pennies where in the cups. The chart below shows the levels recorded with the pennies in the cups (black) and the levels once they were removed (red) along with the affect on the pennies. Once the levels were recorded we removed the pennies and took ...

Activity:  This week my classmates and I were able to construct a bridge made of popsicle sticks. Our goal was to build the lightest bridge possible, while maintaining a strong structure that could hold weight. To accomplish this I decided to model my bridge after the warren which is pictured below.    Construction :  I began by creating both of the side frames which consisted of 26 sticks for each side, which ended up being 52 total. I then built the base and the top which only took 18 sticks total. I found that adding vertical supports made the bridge more stable, so I added an additional 2 sticks to each side. Once completed I ended up using 72 sticks total. I glued each piece together with hot glue, and upon completion I went back and added Elmer's glue to the joints of the bridge to insure stability. In the end my bridge weighed 82 grams. Results:  My bridge ended up holding 67 pounds which was suspended from the bottom as seen in the pictures below. T...