Areaction will most likely occur if the colliding particles have the proper

a rection will most likely occur if the colliding partilces have the proper orientation and energy.

The reactions occur becasue the molecules collide.

But not all the collisions result in a reaction.

The collisions have to meet some requirements.

Two of the basic requirements is that the collision has enough energy to overcome the activation energy and that the molecules collide in the riight way.

When two molecules react it is necessary that one element of one of the molecules interact when a specific element or group in the other molecule. That is the orientation must be the right one.

Collisions that to not have the proper orientation or enough energy will not cause reaction (changes in the bonds of the molecules). 

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.