Mysterious Powder

Lab Report


My group chose on doing iodine, litmus paper, PR, and vinegar. We thought since only a few tests reacted to vinegar so that test would definitely eliminate a few powders. My group thought that the litmus paper might give us a clue to what it is, and see if the test matches another powder's PH. Only one test in our unit showed positive for starch so we thought that maybe our mysterious powder might have starch in it too. My group decided that we should test with PR too. We figured that we should see if it has any acids in the mysterious powders.


My group thinks that the mysterious powder is a mixture of red, orange, and green. Red because it matches the tests for vinegar, PR, and litmus paper. Orange because it matches the tests PR and vinegar. And orange because it is the only powder that has starch in it.