Types of Reactions 5 types of reactions 1

Types of Reactions 5 types of reactions: 1. Synthesis 2. Decomposition 3. Single Replacement 4. Double Replacement 5. Combustion

Synthesis 2 elements or compounds combine to make 1 compound. elements or compounds A + B AB Fe+ O 2 Fe 2 O 3 Ca. O + H 2 O → Ca(OH)2 SO 2 + O 2 → SO 3 Always a compound

Decomposition 1 compound (reactant) falls apart into 2 or more elements or compounds. compound Ex AB A + B H 2 O H 2 + O 2 NH 4 NO 3 → N 2 O + H 2 O elements or compounds

Single Replacement A single atom replaces a like atom in the compound AX + B BX + A element compound (cation replaces cation, anion replaces anions) Fe + Cu. Cl 2 Fe. Cl 2 + Cu Cl 2 + KBr KCl + Br 2

Double Replacement l Like atoms from 2 compounds exchange places to produce 2 new compounds (switch partners) ALL ionic compounds AB + CD AD + CB Pb(NO 3)2 + KI Pb. I 2 + KNO 3

Combustion Reactions l Hydrocarbon combines with oxygen and produces carbon dioxide, water, and energy hydrocarbon + O 2 (g) CO 2 (g) + H 2 O (g) Ex. CH 4 + 2 O 2 CO 2 + 2 H 2 O

What type of reaction does each picture represent?

Classify each type of reaction 1. _____ Fe (s) + Cu. NO 3 (aq) Cu (s) + Fe(NO 3)2 (aq) 2. _____ KI (aq) + Cl 2 (g) KCl (aq) +I 2 (aq) 3. _____ Al (s) + S (s) Al 2 S 3 (s) 4. _____ Fe. S (aq) + HCl (aq) Fe. Cl 2 (aq) + H 2 S (s) 5. _____ KCl. O 3 (s) KCl (s) + O 2 (g) 6. _____ C 4 H 10 (g) + O 2 (g) CO 2 (g) + H 2 O