It’s science night again! Today we did some goopy gross experiments. I honestly thought this program would attract mostly boys, but I am quite happy to report that I had about an even number of boys and girls participating. The things I find to be most difficult with science programs like this is you are stuck doing a lot of measuring ahead of time, which can be a waste if you have low attendance. I feel like I spent an hour just pouring glue into little cups. Also I tend to have patrons show up late or not pay attention so getting everyone to do the same thing at the same time can be difficult.
Non-Newtonian Fluid Experiment
This goes by the name of slime or ooblek, A simple mixture of cornstarch, water, and a drop of food coloring (if you wish). This is a fun experiment because a non-newtonian fluid does not always act like a liquid. If you apply sudden force it will act like a solid. If you have a large speaker ( I don’t) you can expose the fluid to music and it will “dance”.
GAK – Polymer Glue Experiment
This experiment is all about chemical reactions. Mixing glue and some water with borax dissolved in it will result in a chemical reaction making slime (less borax) or GAK (more borax). You can use bigger straws to blow bubbles in the GAK too.
Using cornstarch, glue, and borax you can create a more concentrated compound that can be rolled into a ball and will bounce. I personally thought this was the weakest of the experiments though some of the kids thought it was hands down the coolest. When I do this program again I will probably modify the Gak to slime and drop the bouncy ball experiment as two experiments are sufficient.
Activity 1: Cornstarch Non-Newtonian Fluid
Activity 2: Glue & Borax “Gak”
Activity 3: Cornstarch + Glue + Borax Bouncy Balls