For Hallowe’en we made some lovely slimy gloop.
We mixed cornflour, water and a little red food dye to make it look more like blood and guts.
The mixture is a liquid, but it acts like a solid when we punch it or jab our fingers into it. We can even pick it up and roll it into a ball.
It is a “non-Newtonian liquid”. So are custard and ketchup. That means that if you are trying to get ketchup out of a glass bottle you should ABSOLUTELY NOT hit the bottle. If you do, the liquid ketchup will become more solid.
Science is so interesting!