The diagram shows a test tube of copper (ii) sulfate solution before and after the addition of iron shavings during an experiment. use the diagram to answer any questions that follow. the experiment shows a group of answer choices physical reaction, because the solution changed color. chemical reaction, because the solution changed color. physical reaction, because it involved a compound. chemical reaction, because it involved a mixture.
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The diagram shows a test tube of copper (ii) sulfate solution before and after the addition of iron...
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