Research Experiment: Depending on how the shape is, it will affect the speed of the reaction with copper sulfate and the color of the solution.
Background Information: In Copper Sulphate solution you have Copper ions (and Sulphate ions). When you add Aluminum foil to the solution, the metal Aluminum will transfer electrons to the Copper ions, and Aluminum ions will be formed instead. That is why you see a hole in the aluminum. If the material such as Aluminum foil has a bigger surface area it will be able to absorb more of the solution.
Background Information: In Copper Sulphate solution you have Copper ions (and Sulphate ions). When you add Aluminum foil to the solution, the metal Aluminum will transfer electrons to the Copper ions, and Aluminum ions will be formed instead. That is why you see a hole in the aluminum. If the material such as Aluminum foil has a bigger surface area it will be able to absorb more of the solution.
Hypothesis: I predict that the larger the surface area the faster the reaction will happen with the copper sulfate.
Material:
Procedure:
Pure copper sulfate: 76.93%
Ball:83.60
Compact Square: 79.60
Regular Square:90.00
Material:
- copper sulfate
- 3 (2cm by 2cm) square Aluminum foil
- test tubes
- graduated cylinder
- safety glasses
- scissors
- ruler
- cuvitte
- colorimeter
- computer
- pencil and paper (to record results)
Procedure:
- First get 3 (2cm by 2cm) sizes of Aluminum foil
- First square u roll into a ball as tight as possible, second square you fold it as many times as u can, the third square you leave alone.
- Then you put 10 mL in 3 test tube
- Insert the the 3 different aluminum foil shape into the 3 different test tubes
- Then let it set for 30 minutes
- after 30 minutes put each solution into a cuvitte
- put each cuvitte in the colorimeter
- Record your results according to how much light gets through
- Repeats steps 1-8 as desired
| Shape of aluminum foil: | % of how much light gets through |
| None | 76.93% |
| Ball shape | 83.60% |
| Compact square shape | 79.60% |
| regular square shape | 90.00 |
Pure copper sulfate: 76.93%
Ball:83.60
Compact Square: 79.60
Regular Square:90.00
Conclusion: My hypothesis was correct the aluminum foil which had the largest surface area had the fastest reaction. I measured it by how much color was coming through. I'm predicting that since had a little more gaps it helped the reaction go faster. Pure copper sulfate had 76.93% of light going through it, the ball shaped head 83.60% if light going through it, the compact square had 79.60% if light going through it, and the regular ( un-touch Aluminum foil) had 90% of light going through. If I were to do this experiment again i would do 2-3 more tests to get a more accurate result.
Further Inquiry: Next time I would see if water temperature would affect the reaction. Adding more copper sulfate would that take more time for the reaction or faster. If I increased the temperature it might have had a faster reaction. If you put more of the solution it might take longer.
Further Inquiry: Next time I would see if water temperature would affect the reaction. Adding more copper sulfate would that take more time for the reaction or faster. If I increased the temperature it might have had a faster reaction. If you put more of the solution it might take longer.
Good suggestions for future experiments Abe. I wish you would have explored the reaction a little more in your background information since the youtube video gave a lot of hints about how the reaction happens. The aluminum foil does not absorb solution. It reacts with the blue copper ions in the solution making it fainter as the reaction progresses. Good effort with this write-up and thanks for submitting it on time.
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