Chemistry Reactions, Counting Atoms and Balancing Quiz
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13 Terms
chemical reaction
one or more elements are changed into one or more different substances
The Law of Conservation of Mass
matter is never created or destroyed
reactant
the original substance
product
the new substance
3
3CO2 amount of moles (coefficient)
2
3CO2 amount of atoms (subscript)
3 moles 15 atoms
3CH4 amount of moles (coefficient) and atoms (subscript)
1 mole and 7 atoms
Al(OH)3 amount of moles (coefficient) and atoms (subscript)
synthesis
two or more substances combine to form a new compound
decomposition
a compound decomposes into two or more simpler substances
combustion
a substance will combine with oxygen and in the process give off energy in the form of light and heat
single replacement
one element replaces another element in a compound
double replacement
two ionic compounds exchange ions in solution to form two new compounds
Note 
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