![Ketchup bottle and ketchup spill](/sites/default/files/styles/resource_card_image_360x300_/public/2020-03/ketchup_spill.jpg?itok=p-UzhYcC)
Why is ketchup so hard to pour?
STEM Explained
Ever go to pour ketchup on your fries… and nothing comes out? We’ll let the secrets about the viscosity of this non-Newtonian fluid out of the bottle!
![Is it a liquid or a solid?](/sites/default/files/2019-08/is-it-a-liquid-or-a-solid.jpg)
Is it a liquid or a solid?
Hands-on Activities
Make some goop that has the properties of a liquid and a solid.