Mysterious Powder

Lab Report

In this photo we are testing the physical properties to see if it matches any other physical properties of the other mysterious powder.
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In this picture we are testing the acidic level or the basic level with litmus paper.
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Our group is testing iodine in this picture and the test turned out to be a positive test.
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Our group is testing vinegar to see if the mysterious powder will fizz. It did fizz for 16 seconds.
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Results and Conclusions

We think it has orange because it matched up with pH and vinegar, green because it was the only positive starch test, and purple because it was rough like the mysterious powder.