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PS Chemical Rxns

Review of the parts of a chemical reaction

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
speeds up chemical reaction in living things enzyme
Created by: cadetjt