Why dont we use words like provr or does not prove in science

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Consider the equilibrium system: 2icl(s) ⇄ i2(s) + cl2(g) which of the following changes will increase the total amount of of cl2 that can be produced? all of the listed answers are correct decreasing the volume of the container removing the cl2 as it is formed adding more icl(s) removing some of the i2(s)

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?