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.
Types of Chemical Reactions. Doing chemical reactions is the main focus of chemistry because that's where the action is. That's when something gets made, changed, or destroyed. So a lot of emphasis is placed on chemical reactions. Chemical reactions can be understood by these three areas of focus. A reaction is basically shuffling around the building blocks of chemistry (atoms/ions/molecules/electrons). Force & energy is what decides if the reaction occurs and how fast.