I’ve had the opportunity to view several research labs over the course of the UNMC High School Alliance school year, but so far visiting Dr. Conda Sheridan’s lab has been the most interesting so far. We got to see several of the projects that they were working on, and what was different from some of the other labs that we have visited is that you could actually see the changes happen in the solutions as the reactions took place. For example, Dr. Conda Sheridan showed us how he would isolate specific parts of a liquid compound he wanted by adding chloroform as a natural soluble. We were able to see as the liquids separated before he drained the unnecessary portions and then repeated the process. It was interesting to see some of the ways they
During this lab I learned how to convert the mass of a compound to the number of moles and then to the number of molecules, I also learned how to determine the concentration of a
How was this lab activity similar to other labs that you have done in the past?
The labs I chose were Electron Distribution using Peas, Mendeleev for a Day, and Flame Tests. I chose these labs because they helped me realize how electrons work and why the periodic table is set up the way it is. It also helped me see how electrons work in the atoms of the periodic table. The Electron Distribution using Peas lab helped me understand how the electrons are placed in levels based on their energy.
In Week Three through Week Eight, you conduct scientific experiments in an online lab environment. The content of the labs vary with each week but the structure remains the same. This week, review your Week Three lab instructions and assignment to become acquainted with the essential elements of each lab. You are not required to complete the actual lab this week, but rather to locate various pieces of information about the labs to help prepare for completion of the labs in Week Three through Week Eight.
* What is the intent of the lab? What issues are addressed? Why is it important? What are the goals?
Our observations of the lab are important because they tell us what we saw and what will happen when the three mixtures reacted together. Observation can be done qualitatively and quantitatively, keeping records of the information more detailed and resourceful. If we didn’t write down
This lab was pretty cool because we got to do numerous tests and see different but similar results. I learned how Newton’s Third Law works and it’s very cool. Newton’s third law happens in everyday life. For example, fighting over the remote control with your brother, you both add an equal and opposite reaction of force. Overall this lab was fun and a learning lesson. I had a great time with this fun
The Chemical Baggies Lab demonstrated to students how certain chemicals cause diverse chemical or physical changes depending on what substances were mixed together in a designed controlled experiment. During the process of this experiment, almost identical observations were made about different combinations of chemicals that had at least one substance in common. For example, the frequent observation that was made throughout the experiment was that heat was felt. Even though there were distinct chemical combinations, there was one substance that generated a certain observation or characteristic, such as a mixture has to comprise of the phenol red for there to be a color change, which was learned from this lab. Also, calcium chloride
I have always been interested in science, but the hands on experiments have helped me understand and grasp concepts much easier. I recall my first experiment in first grade when the class was given the lima bean sprout experiment, which required students to plant a bean in a paper cup. The purpose of this experiment was to teach us about photosynthesis and practice our observation skills. I recall how others were fascinated about why their sprout grew. I, on the other hand, was more captivated by why the other sprouts did not grow and the factors, which contributed to that outcome. This basic experiment taught me to look at things through different lenses and not always to the most obvious path.
When Bella first contacted me in 2014 expressing her interest in working in my lab, I gladly accepted her. High School students in general are very busy with their studies, homework and extracurricular activities. From the beginning, she committed herself to a weekly average lab work schedule of 12-14 hours along with additional time on the weekends for the opportunity to learn new procedures. The kind of passion and commitment Bella exhibited is truly exceptional.
We had to add a chunk of Sodium to a water bucket outside. We gently dropped it in, got away from it and observed the reaction. 3. We had to add 5 ml of Hydrochloric acid to a small beaker and swirl it. Then we added sodium hydroxide and had to check for heat and color change.
The initiative helps cement student interest in various career paths, but the goal of Lab Day is to inspire students and help them discover new
Analyzing and research has been a part of me since a child from researching what’s the best way to make a marshmallow launcher for my fourth grade project to finding and identifying ions present in unknown solutions in my chemistry qualitative lab. Slowly my mind started to uncover things I’ve never been fond of before, especially
In this lab we sued the water displacement technique and being able to fill a pipet the correct way.
A few more important terms to keep in mind when doing a lab with chemical and physical changes are