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Energy In Chemical R

Energy In Chemical Reactions

QuestionAnswer
What is an Exothermic Reaction Exothermic reaction: is a reaction that gives off heat
What happens when an Exothermic Reaction takes place An increase in temperature is always observed when an exothermic reaction takes place
What is an Endothermic Reaction Endothermic reaction: is a reaction that takes in heat
What happens when an Endothermic Reaction takes place A Decrease in temperature is always observed when an endothermic reaction takes place
What happens during a chemical reaction During a chemical reaction, old bonds are broken and new bonds are formed
Does breaking bonds require energy Breaking bonds requires energy
What type of reaction is bond breaking Bond breaking is an endothermic reaction as energy is taken in
What happens to energy when bonds are formed Forming bonds releases energy
What type of process is bond formation Bond formation is an exothermic reaction as energy is given out
What is Bond Energy Bond energy is the energy required to break different bonds The units are kilojoules per mol (KJ/mol)
What is the activation energy Activation energy is the minimum amount of energy colliding particles must have in order for a reaction to occur
In an exothermic reaction do products have less or more energy than the reactants In an exothermic reaction the products have less energy than the reactants as the reaction has lost/released energy
In an endothermic reaction do products have less or more energy than the reactants In an endothermic reaction the products have more energy than the reactants as the reaction has gained energy
HOW DOES A CATALYST AFFECT THE ACTIVATION ENERGY? A catalyst lowers the activation energy This results in less energy being needed for a reaction to occur and hence increases the rate of a reaction
What type of collision must take place for the formation of a product to take place Particles of reactants collide during a chemical reaction. An effective collision is a collision that results in the formation of a product.
Created by: JMahango
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