TYPES OF EQUATIONS

DECOMPOSITION:  a compound breaks apart into simpler substances
* To recognize a DECOMPOSITION reaction, look for only 1 REACTANT. *


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SYNTHESIS:      2 or more simple substances combine to form one compound; 
                        opposite of decomposition
* To recognize a SYNTHESIS reaction, look for only 1 PRODUCT. *


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SINGLE REPLACEMENT:  an element reacts with a compound to form a new element &
                                         a new compound
* To recognize a SINGLE REPLACEMENT reaction, look for one element and one
   compound as the reactants. *


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DOUBLE REPLACEMENT:  a compound reacts with another compound to form 2 new
                                          compounds
* To recognize a DOUBLE REPLACEMENT reaction, look for 2 compounds as the
    reactants. *


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COMBUSTION:  an organic compound (usually a hydrocarbon) combines with oxygen to
                            produce carbon dioxide and water
* To recognize a COMBUSTION reaction, the reactants will be an organic compound and
   oxygen. *

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