Based on the limited information provided, a copper sulfate reaction likely refers to creating copper sulfate crystals. The simplest method described involves evaporating a copper sulfate solution.
Here's a breakdown of how to create copper sulfate crystals through evaporation:
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Obtain a Copper Sulfate Solution: (The video doesn't detail how to make the copper sulfate solution, only how to evaporate it. Methods to create the solution commonly involve reacting copper metal with sulfuric acid or other methods not mentioned in the reference). For the purposes of this question, we assume a solution is already obtained.
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Dispense the Solution: Carefully pour the copper sulfate solution into a shallow dish (like a petri dish). The video suggests this step.
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Evaporation: Allow the solution to evaporate naturally at room temperature. This process is best done in a location where the solution will not be disturbed.
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Crystallization: Over time (the video mentions "overnight"), the water will evaporate, leaving behind bright blue crystals of copper sulfate.
It's important to note that the video clip only shows the final stage of creating copper sulfate crystals from an existing copper sulfate solution. It does not describe how to create the initial copper sulfate solution.