Slime is science! It's when you mix ingredients like glue, baking soda and activator that then makes a non-Newtonian fluid. It's not liquid nor a solid, but it can be picked as a solid and ooze like a liquid. The most common form of activator used in slime is saline contact solution. You can make slime with various ingredients. You can even add ingredients like clay, foam beads, and fake snow to make different kinds of slime like butter, crunchy, cloud, and jelly slime. Slime can be a fun activity to make for children and adults, it can be soothing and used as a stress reliever.