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  • Essay / 18 Steps to Perform a Chemistry Experiment - 1469

    STEP 1: Test the conductivity of the glasses with a voltmeter. Look for the side that has resistance. To begin this experiment, we needed to determine the conductive side of the glass. The driver's side will have the resistance. This will be the most active in this experience. It will play an important role in this experiment because it contains the electrons needed for this experiment. STEP 2: Glue the conductive sides to the table. Place each side with two pieces of tape, except the side closest to you place one. Gluing the driver's side is a crucial part of this experience. The tape allows you to control the thickness of the titanium on the glass, which influences the tension. The surface of the titanium on the glass also affects the tension result. The length of the sides will determine the area around which the electrons will move. For this reason, the voltage intensity will also depend on it. There also needs to be enough space away from the edge of the glass for us to attach the alligator clips without it missing the voltage it has the capacity to produce. Space is also crucial because this is where the iodine solution will enter the photovoltaic cell. Laying the ribbons is an important first step that helps the cell reach its full potential. STEP 3: Clean the surface with isopropyl alcohol. Isopropyl alcohol disinfects the surface and also cleans it, which is important. Particles that are still on the conductive glass can affect the overall performance of the photovoltaic cell. Particles that are not cleaned have the potential to disrupt the flow of electrons that create the electricity that flows through the cell. STEP 4: Prepare a painting ...... middle of paper ...... this project. We have discovered that the photovoltaic cell and galvanic cells are similar in several respects. They both share similar concepts like that of the salt bridge. Photovoltaic cells contain their own version of a salt bridge that gives the cell its ion balance. In this case, it is the iodine solution which acts as a salt bridge. The I^-/I_3^- is used as a couple in this redox reaction. Initially, when the cell is exposed to sunlight, the entropy, or disorder of the electrons, will be high. After a while, the electrons stabilize in a certain position, which also stabilizes the voltage. Works Cited http://chemistry.beloit.edu/classes/nanotech/solar/mattoday10_11_20.pdf (Forbes) http://cdn.intechopen. com/pdfs-wm/30952.pdf (Dubai)http://www.solar-facts-and-advice.com/cadmium-telluride.html (SBI)