The orientation of the molecules are wrong
The orientation of the molecules are correct
The molecules are moving too fast to be able to collide
The molecules are moving too slow to be able to collide
Temperature and orientation
Concentration, orientation, and temperature
Energy and concentration
There are less collisions occuring because since there are more molecules present, they move slower.
There are more molecules which causes more collisions to occur and more reactions to take place.
There are no collisions taking place because there is no room for them to move around.
There is no change. Collisions happen at a constant pace and the concentration of molecules doesn't affect collisions.
All of the above
Molecules colliding to reach equilibrium
Molecules colliding to lower the activation energy
Molecules colliding to form a reaction
Molecules colliding to speed up a reaction