![]() ![]() 17.5 “Temperature and Reaction Rate”).įigure. Therefore, a greater proportion of molecules will have the minimum energy necessary for an effective collision (Figure. An increase in temperature will raise the average kinetic energy of the reactant molecules. An increase in temperature typically increases the rate of reaction. Therefore, increasing the surface area of the metal by pounding it flat or cutting it into many pieces will increase its reaction rate.ģ. For example, if a solid metal reactant and gas reactant are mixed, only the molecules present on the surface of the metal are able to collide with the gas molecules. If reactant molecules exist in different phases, as in a heterogeneous mixture, the rate of reaction will be limited by the surface area of the phases that are in contact. Physical state of the reactants and surface area. A chemical reaction is a process that changes some chemical substances into others. A chemical reaction occurs when reactant particles answer choices are separated by great distances have no attractive forces between them convert chemical energy into nuclear energy collide with proper energy and proper orientation Question 2 45 seconds Q. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products. This occurs because a higher concentration of a reactant will lead to more collisions of that reactant in a specific time period.Ģ. Chemical reactions occur when chemical bonds between atoms are formed or broken. Increasing the concentration of one or more reactants will often increase the rate of reaction. There are four main factors that can affect the reaction rate of a chemical reaction:ġ. ![]() ![]() This potential energy diagram shows the activation energy of a hypothetical reaction. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |