Type of Reactions

The five basic reaction types are
Synthesis, Combustion, Decomposition,Single replacement, double replacement
Synthesis
two or more reactants join together to form one single product
example 2Na+Cl2>2NaCl
Decomposition
one single reactant, compound produces two or more products
AB> A+B
Combustion reactions
oxygen reacts with another substance often producing energy in the form of heat and light General form Cx hy(oz) +02> CO2+ H20
Single Replacement
Atoms of one element replace the atoms of another element that is part of a compound- in other words an element + a compound yields a new element + new compound general form: AX + B> BX + A OR AX +Y> AY + X A AND B ARE METALS OR HYDROGEN AND X,Y ARE NON METALS
Double Replacement
an exchange of cations (+ions) between two ionic compounds AB + CD> AD + CB
what is a precipitate
it is insoluble or slightly soluble in water. A solubility chart can help determine this
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