Synthesis 2 or more elements or compounds combine to make one product A + B  AB Element + element yields compound

One compound is broken down into 2 or more elements or compounds AB  A + B Decomposition Compound yields element + element

Single Replacement Replacing of one element in a compound with another element AB + C  AC + B Compound + element yields compound + element

Double Replacement Two compounds exchange elements AB + CD  AD + CB Compound + compound yields compound + compound

Combustion Fuel burns in the presence of oxygen to produce carbon dioxide and water (along with other by-products) ALWAYS EXOTHERMIC Fuel + O 2  CO 2 + H 2 O burning

Examples: S - 2Mg + O 2  2MgO D - 2H 2 O  2H 2 + O 2 SR - 2Al + 3CuCl 2  2AlCl 3 + 3Cu DR - FeCl 2 + Na 2 CO 3  2NaCl + FeCO 3

Identify the type of reaction : 4Al + 3O 2  2Al 2 O 3 Mg + 2HCl  H 2 + MgCl 2 Pb(NO 3 ) 2 + K 2 CrO 4  PbCrO 4 + KNO 3 2HgO  2Hg + O 2 Fe + CuCl 2  FeCl 2 + Cu 3H 2 + N 2  2NH 3 4C 3 H 5 (NO 3 ) 3  12CO 2 + 6N H 2 O + O 2 S SR DR D SR S D