Making slime from a leftover pumpkin
A simple scientific experiment for your happy Thanksgiving Day!
Warning! Only under adult supervision. Do not eat the slime or the pumpkin used in the experiment.
- leftover pumpkin;
- glue with polyvinyl alcohol;
- contact lens solution;
- baking soda.
Add some PVA glue, contact lens solution, and baking soda to some leftover pumpkin and mix thoroughly – this creates an amusing orange slime with pumpkin seeds inside!
Glue used to make slime must contain polyvinyl alcohol. This compound consists of molecules with a huge number of special fragments. Just like small hooks, these fragments catch on the molecules yielded by the reaction between baking soda and boric acid (which can be found in contact lens solution). They form weak chemical bonds, but in a huge quantity, so the glue thickens rapidly and turns into slime. Want a fun Thanksgiving story? Make this slime and leave it in a hollow pumpkin without telling anybody. A friend or two might be very surprised to find that slime has formed inside the pumpkin!
Even more amusing experiments to do for Thanksgiving 2021 await you in the MEL Science subscription!