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Project title ElectrolysisFeatured science projectScience project video
Difficulty Level High school
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This science fair project was done to investigate the effect of increasing DC voltage and the concentration of electrolyte salt on the rate of production of hydrogen gas during the process of electrolysis. 

Instructions preview
1. For this science fair project, the independent variables are the DC voltage and the concentration of salt in the electrolyte. The dependent variable is the time taken to collect the released hydrogen gas, and will be measured with the stopwatch. The constants (control variables) are the amount of oxygen collected in the test tube and the surface area of copper wire exposed to the electrolyte solution. 2. Using the pliers, strip both copper wires of approximately 30 millimeters of insulation on both ends. Bend the wire into ‘S’ shapes and place them inside the beaker, as shown below .....
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