18 Steps to Make a Chemistry Experiment Essay

18 Steps to Make a Chemistry Experiment Essay

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STEP 1: Test the conductivity of the glasses with a volt meter. Look for the side which has resistance.
To start this experiment off, we needed to determine the conductive side of the glass. The conductive side will have the resistance. This will be the most active in this experiment. It will take a huge part to this experiment because it contains the electrons that this experiment requires.
STEP 2: Tape down the conductive sides to the table. Place each side with two pieces of tape except the side closest to you place one piece.
Taping down the conductive side is a crucial part to this experiment. The tape helps control the thickness of the titania on the glass, which influences the voltage. The area of the titania on the glass also affects the voltage outcome. The lengths of the sides will determine the area of which the electrons will move around. Because of this, the strength of the voltage will be depended on this as well. There also needs to be enough space away from the edge of the glass so that we can attach the alligator clips without it failing to measure the voltage that it has the ability to produce. The space is also crucial because it is where the iodine solution will enter the photovoltaic cell. The placing of the tapes is an important first step that help the cell reach its full potential.
STEP 3: Clean the surface with isopropyl alcohol.
The isopropyl alcohol disinfects the surface and also cleans it, which is important. The particles that are still on the conductive glass may affect the performance of the photovoltaic cell overall. The particles that are not cleaned off have the potential to disrupt the flow of electrons that create the electricity that flows through the cell.
STEP 4: Prepare a paint ...

... middle of paper ...

...this project.
We discovered that the photovoltaic cell and galvanic cells are, in a couple ways, similar to each other. They both share similar concepts such as the concept of the salt bridge. The photovoltaic cells contain its own version of a salt bridge which gives the cell its balance in ions. In this case, it is the iodine solution that acts as the salt bridge. The I^-/I_3^- is used as the couple in this redox reaction. At first when the cell is introduced to the sunlight, the entropy, or the disorder of the electrons, will be high. After a while, the electrons will stabilize into a certain position which makes the voltage also stabilize.

Works Cited

http://chemistry.beloit.edu/classes/nanotech/solar/mattoday10_11_20.pdf (Forbes)
http://cdn.intechopen.com/pdfs-wm/30952.pdf (Dubay)
http://www.solar-facts-and-advice.com/cadmium-telluride.html (SBI)

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