The elastic force that stretches or pulls on the molecules in matter is called tension.

Here's why:

* Tension is a force that arises when an object is pulled or stretched. This force acts along the length of the object and is directed outwards from the point of application.

* Elasticity refers to the ability of a material to deform under stress and return to its original shape when the stress is removed.

* When you stretch or pull on a material, you are increasing the distance between its molecules. This creates a tension force that tries to restore the material to its original shape.

Let me know if you have any other questions!