Explain procedure b 1 place ½ inch of sugar in a dry

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     Is this a physical or a chemical change? Explain.                                                                                                                                                                                                                                                                                       PROCEDURE B 1.  Place  ½  inch of sugar in a DRY test tube.  2.  Using a test tube holder, gently heat the sugar over a Bunsen burner until the sugar      seems to have changed completely.  What does the substance at the mouth of the
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     test tube appear to be?                         Is this a physical or a chemical change? Why?                                                                                                                                                                                                         Explain your results with regard to the chemical formula of sugar (see materials list).                                                                                                                                                                                                                                                                                                                                                                                                       PROCEDURE C 1.  Place a small piece of zinc in a test tube.  Add 5 ml of dilute sulfuric acid (H 2 SO 4 ).         Describe your results.                                                                                                                                                   What gas do you think evolved from this reaction?                                              
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