Oobleck!

This week we have been learning about Newtonian and Non-Newtonian Liquids. Today we made Oobleck!

Oobleck is a non-Newtonian liquid, a fancy term for a liquid whose viscosity changes depending on pressure. Viscosity is the measure of friction in a liquid and determines how fast or slow a liquid flows. Most liquids have what we call consistent viscosity, for example honey and water will always flow the same no matter how you pour or press them. Oobleck on the other hand does not have consistent viscosity. If you apply pressure to it, it forms a solid, loosen the pressure and it melt back into a liquid. Because the viscosity changes, it is classified as a non-Newtonian liquid.

In chemistry oobleck is what is known as a colloid, a substance in which small particles of one substance are suspended throughout another substance but not chemically bonded. 

Lots of fun and mess was made!