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2.4 Chem. Reactions

QuestionAnswer
Chemical Reactions Change substances by breaking and forming chemical bonds
Reactant The substance you start off with
This changes during a chemical reaction A reactant
Product The substance you end up with
This is the goal of a chemical reaction Products
Bond energy the amount of energy in a bond
This is at equilibrium when reactants and products form at the same ate Reaction
This releases or absorbs energy Chemical Reaction
Activation energy The amount of energy that needs to be absorbed to start a chemical reaction
Exothermic Reactions Release more than they absorb
This is released by the changing reactants Excess Energy
This has lower bond energies than reactions Products
Endothermic Reactions Absorb energy
Created by: Marledge
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