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PS Chemical Rxns

Review of the parts of a chemical reaction

QuestionAnswer
starting material in a chemical reaction reactants
ending material in a chemical reaction products
speeds up a chemical reaction in nonliving things catalyst
Numbers never changed to balance a chemical equation subscripts
Numbers added to balance a chemical equation coefficients
a chemical equation that has unequal numbers of each element on both sides skeleton
this is conserved (saved) in every chemical reaction mass & number of atoms
use this coefficient if you do NOT want any change to the number of atoms one
says that mass is not created or destroyed in any chemical reaction law of conservation of mass
AB --> A + B decomposition reaction
AB + C ---> CB + A single replacement reaction
A + B --> AB synthesis (combination) reaction
AB + CD --> AD + CB double replacement reaction
CxHy + O2 --> CO2 + H2O combustion reaction
means 2 atoms diatomic
means 8 atoms octatomic
means 4 atoms tetratomic
means 1 atom monatomic
examples of diatomic elements Br , N , H
examples of tetratomic elements P , As
example of octatomic elements S
used to determine if a single replacement reaction will occur activity series of metals & halogens list
reactants are found on this side of the chemical equation left
products are found on this side of the chemical equation right
catalyst are found here in a chemical equation above the arrow
this energy is needed to start a chemical reaction activation energy
Created by: cadetjt
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