AP Chem- Types of Reactions

Synthesis (reactants)

2 pure elements

X+Y

Synthesis (product)

1 compound

X+Y —> XY

Decomposition (reactants)

1 compound

XY

Decomposition (product)

2 pure elements

XY —> X+Y

Combustion (reactants)

C_xH_y +O₂

C_xH_yO_Z

Combustion (product)

C_xH_y +O_{2 —>} CO₂+H₂O

Single replacement (reactants)

1 pure element and ionic compound (or acid)

AX+B

Single Replacement (product)

Pure elements swap places into the ionic compound

AX+B —> A+BX

Double Replacement (reactants)

2 ionic compounds (and/or acids)

Double Replacement (product)

Ions swap partners to make 2 new neutral ionic compounds

Acid Base (reactants)

1 acid (containing H⁺) and 1 ionic compound with OH^-

HY+XOH

Acid Base (product)

1 ionic compound and H₂O

H₂O + XY