Monday, March 9, 2009

Oobleck: Solid or Liquid? You Decide!

Last week in science class we began studying about matter. We have learned that there are 3 states of matter: solid, liquid and gas. Students have identified characteristics of each of these forms of matter. Today we experimented with a unique substance we will call “Oobleck.”

Through their experiments with the Oobleck, students found that it had characteristics of both a solid and a liquid depending on how it was handled. When students poked the substance quickly with their finger, it acted like a solid, keeping it’s shape. When students poked the Oobleck slowly with their finger, it acted like a liquid, changing shape.

Students had a fun time working with the Oobleck. As always, they were expected to record their experiment on a lab sheet. They also recorded some fantastic questions that they were wondering after the experiment. Some of the questions were “What would happen if you freeze the Oobleck?” “What is the Oobleck made out of?” and “Is it possible to turn the Oobleck into a gas?”

After our initial experiment we even tried to walk on the Oobleck! When we walked quickly the Oobleck acted like a solid and when we walked slowly it acted like a gooey liquid. Oobleck is AWESOME (and a little messy. but totally worth it!)!!
Thanks for checking in!
Miss Russell :)
PS- Oobleck is 1 ½ parts corn starch to 1 part water (and a little bit of green food coloring.)

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