Mysterious powder

the tests

We tested iodine,ph,pr and vinegar.We tested iodine for starch.We tested pr for acid.We tested ph for colors.We tested vinegar for to see if it bubbled.

Results/Coclusion

We think it is red because it was the same number as last time.We think it is green because it had starch.We think it is orange because it had starch. We think it is yellow because it had starch.
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test photos

this is the mysterious powder it has acid.
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test photos

This is the iodine with the mysterious powder.
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test photo

this is the vinegar.With the mysterious powder.