For a laboratory investigation some students put a strip of shiny metal into a beaker of blue solution and then stored the beaker on a shelf overnight. The next morning, the students recorded observations about the metal and the solution in the box below. Based on their observations, can the students correctly conclude that a chemical reaction occurred?
No, because the metal strip was still visible
Yes, because a new material of a different color formed on part of the metal strip
No, because the solution stayed blue
Yes, because the volume of the blue solution stayed the same
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