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.
As a demonstration, light a candle and explain what is happening using the terms reactants, products, and chemical reaction. Explain that in most chemical reactions, two or more substances, called reactants, interact to create different substances called products. Tell students that burning a candle is an example of a chemical reaction.