Classifying Chemical Reactions 1. Synthesis A + B  AB 2. Decomposition AB  A + B 3. Single Displacement A + BC  AC + B (where A is a metal)‏ OR A + BC  BA + C (where A is a nonmetal)‏ 4. Double Displacement AB + CD  AD + CB

Important Synthesis Reactions a) Rusting/Corrosion 4 Fe (s) + 3 O 2 (g)  2 Fe 2 O 3 (s)‏ b) Space Shuttle Liftoff 2 H 2 (l) + O 2 (l)  2 H 2 O (g)‏

c) Haber Process N 2 (g) + 3 H 2 (g)  2 NH 3 (g)‏ d) Smog & Acid Rain N 2 (g) + O 2 (g)  2 NO (g) 2 NO (g) + O 2 (g)  2 NO 2 (g)

Important Decomposition Reactions a) Electrolysis of Water 2 H 2 O (l)  2 H 2 (g) + O 2 (g)‏ b) Explosion of TNT 2 C 7 H 5 N 3 O 6 (s)  3 N 2 (g) + 5 H 2 O (g) + 7 CO (g) + 7 C (s)‏

c) Air Bags 2 NaN 3 (s)  3 N 2 (g) + 2 Na (s)‏ d) Concrete CaCO 3 (s)  CaO (s) + CO 2 (g)‏

Reactivity Series of Halogens

Importance of Double Displacement Reactions a) Film AgNO 3 (aq) + NaCl (aq)  AgCl (s) + NaNO 3 (aq) b) Neutralization Reactions 2 HC 2 H 3 O 2 (aq) + CaCO 3 (s)  Ca(C 2 H 3 O 2 ) 2 (aq) + H 2 O (l) + CO 2 (g)