We made flubber or “cornflour slime”. We wanted to find out what would happen if we applied force to the mixture. When we punched it with great force it went hard like a solid. When we moved our fingers through the mixture slowly, it was runny like a liquid. We had so much fun. It was amazing!
Making Flubber! on PhotoPeach
This term we have been working on our Passion project named “Why is it so?” We have conducted a variety of science experiments to show how matter, which is made up of solids, liquids and gases, can change. Here is a sample of our experiments.
Rubber Egg Experiment
We placed a hard boiled egg into a jar of vinegar for three days. Here is a record of what happened.
On Day one some brown scum began to appear in the jar. The egg shell was still hard.
End of day one in vinegar.
On Day Two there were lots of bubbles around the egg shell and there was also lots of foam. The brown scum around the egg was getting darker.
Day two in the vinegar.
On day three, Wesley and Lauren helped to lift the egg out of the jar with a spoon. As they lifted the egg, the shell slipped off the egg. It had turned into a brown scum. The acid fron the vinegar had “eaten up” the carbonate shell. We were all amazed at how the shell had disappeared. We tried to bounce the egg but we didn’t have much luck. Wesley and Isabelle tried but it just broke!
Wesley and Lauren took out the egg.
The eggs shell had dissolved into a brown scum.
What the egg looked like after we tried to bounce it!