How does slime react to the activator?

When slime comes into contact with an activator, typically a solution containing borax or contact lens solution, it undergoes a chemical reaction that causes the polymers in the slime to link together. This process, known as cross-linking, transforms the liquid mixture into a more solid and stretchy substance. The slime becomes thicker and gains its characteristic elastic texture, making it fun to stretch and mold. The specific properties of the slime, such as its viscosity and elasticity, can vary based on the type and amount of activator used.