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Chemical Reactions

Unit 7

Chemical Reaction -atoms of one or more substances are rearranged to form different substances (bonds are broken & new bonds are made) -a chemical change occurs
Chemical Equation reactants --> products -conditions for the reaction are written above the yield--energy changes (heat) -electricity -catalysts
Coefficients whole #'s -- used to balance an equation -lowest ratio
Signs of Chemical Reactions some are hard to detect -Color Change -Temp. Change >endothermic >exothermic -Gas Produced-seen as bubbles >test wood splint -Precipitate Forms >insoluble solid >appears cloudy -Odor
Synthesis A + Y -> AY
Combustion Reactions -release light & heat -combine with oxygen
Decomposition AX -> A + X
Single Replacement A + BX -> AX + B -use activity chart!
Double Replacement AX + BY -> AY + BX
Created by: lexierindler13



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