The Materials Education Resource Center has provided this hands on lab activity created by Andrew Nydam and Debbie Goodwin. The activity demonstrates property change due to crosslinking in slime formed from mixing PVA and Borax solution. This lab will teach the students the important concepts of plastic flow vs. elastic flow, hydrogen bonding, and viscosity. This pdf document provides instructions for the instructor, recommendations to ensure the experiment goes smoothly for both students and teacher, and an evaluation packet for the students to complete once the lab is finished. All in all, this is a fun and education tool for any high school or community college science classroom.

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