1. REACTION EQUATION DESCRIPTION
2 or more elements
A + B = AB
Synthesis combine to form a single
one + one = two
substance
1 substance breaks down to
Decomposition AB = A + B
2 or more substances
two = one + one
(opposite of Synthesis)
AB + C = A + BC 1 element replaces another
Single Replacement
two + one = one + two element in a compound.
The exchange of 2
positive ions between 2
AB + CD = AD + CB
Double Replacement reacting compounds,
two + two = two + two
forming 2 new
compounds as a product
Reacts with Oxygen to
produce energy as heat and
light. Most of the time, it is
A + O2 = CO2 H2O
Combustion ( ) a hydrocarbon reacting
one + O2 = CO2 H2O
with oxygen, and the
outcome is always carbon
dioxide and water