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Project title What happens when voltage is increased during electrolysis?Featured science projectScience project video
Difficulty Level High school
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This science fair project was performed to investigate the relationship between the DC voltage applied to an electrolyte and the rate of hydrogen gas produced during the process of electrolysis. 

Instructions preview
1. For this science fair project, the independent variables are the number of batteries used (ie: the DC voltage applied to the electrolyte). The dependent variable is the time taken to collect the released hydrogen gas. This is measured by using the stopwatch. The constants (control variables) are the amount of the salt content in the electrolyte solution, the amount of oxygen collected in the test tube and the surface area of exposed copper in the electrolyte solution. 2. Strip the insulation of both copper wires exposing approximately 30mm of wire on both ends, using the pliers. Bend the .....
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