Dear Dexter School

From: Megan

We have been studying the ‘Mysterious White Powder’ for several weeks.  We have found out what it is and what it is not. We have done several different tests.  At first we tested the powders with these basic liquids:  Water, Vinegar, Oil, and Alcohol.  Each cup was labeled either:  Blue, Purple, Green, Orange and Yellow.

Here are some results: When we tested it, we put Vinegar in to see if it had Baking Soda in it. And guess what!  It started to bubble!   To see if it had starch in it, we mixed Iodine with the powder and it turned black!  It was really cool!  Here is what we did to see if it had Salt in it:  We used a hand lens. We saw that the powder’s crystals were slightly rounded.

We were very proud of ourselves for figuring out what the powders were.  So we decided to keep going.   Here are some of our results. When we added PR to see if it had acid in it, we found that it had no acid.  While we were at it, we tested to see if it had base or not, by testing it with PT. We found out it wasn’t a base powder.  From our tests we found that the powder was not dangerous.  We enjoyed investigating the mystery powder.

We think that a dog got into the Best Buy Bakery and took three bags that had cornstarch, salt and baking soda in them and brought them to your school, tore the bags,  and the powders went everywhere.  Another idea is that a man dropped his groceries on the road and the wind blew them onto to your playground.  We hope we have helped you in solving the mystery!!!!

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This page last updated: 08/28/04 .