View archive. The Selma Fire Department was established in 1974, âto protect and enhance the quality of life in Selma through a program of services directed toward public education, prevention, and control in areas of fire, rescue, medical, emergencies, hazardous materials incidents, and disasters.â.
2016-09-05T14:42:37-04:00. Collision theory is the topic among the choices given in the question that is used to explain activation energy and how chemical reactions happen. The correct option among all the options that are given in the question is the second option or option B. I hope that the answer has come to your help.
First of all, for a reaction to occur, the colliding molecules must be oriented in exactly the correct way: they must be oriented in suitable way for the product molecule bonds to be formed. Second, the two molecules must collide with sufficient energy to overcome the activation energy of the reaction. The activation energy is defined as the minimum energy needed to initiate a chemical reaction, and it is symbolized by E a.