An idea for the summer to play with in the garden.
Make up some custard powder with water....just enough to get it to a cream consistancy.
(i) Corn flour slime can be stirred, punched, poured and rolled into a ball. Corn flour slime is an example of a non-Newtonian fluid. The rate at which it flows is affected by shear forces as well as temperature. (ii) Add water to corn starch, then pour it, throw it and punch it.
(iii) Mix custard powder with water while stirring until it feels strange when you squeeze it with your hand. The custard should stick to your finger. Push a spoon handle through the custard mixture so that it leaves a clean cut groove that swiftly fills with liquid custard again. Pick up some custard mixture and roll it into a ball between your hands. It feels slimy if you mixed it well. Keep moving the custard so that it forms a ball. Stop moving the custard ball and becomes a liquid. Custard powder contains finely ground corn flour, colouring and flavouring. The corn flour particles link together if you put pressure on them but will separate when the pressure stops. If you keep squeezing, the links join and the custard stays in a ball. The pressure of the spoon handle causes a clean cut, but as soon the spoon handle passes, the custard becomes liquid again.
In oter words you can make 'balls' of custard which turn back into liquid when you throw them!
Excellent garden fun!!!!!!
£1.40 for a tub of powder.....several hours fun