1. Chapter 6 Chemical Reactions
Section 2
Reaction Types
p. 190

2. Identify 5 types of reactions
Objectives
Identify 5 types of reactions
Predict what will happen in an experiment
Discriminate parts in a redox reaction

3. I. Classifying
A. Synthesis (Polymerization is a
synthesis reaction)
1. Two or more substances become one
2. A + B  AB
B. Decomposition (Electrolysis is an example)
1. Complex substances are
broken down into simpler ones
2. AB  A + B

4. C. Single Displacement (Replacement)
1. Changes one element for another – less reactive for a more reactive one
2. AX + B  BX + A
D. Double Displacement (Replacement)
1. Exchange of two ions in two
compounds
2. Shown by a formation of a gas,
precipitate, or molecular compound
3. AX + BY  AY + BX

5. E. Combustion
1. Oxidation of an organic compound
where heat is released
2. Oxygen is ALWAYS a reactant (and
usually a hydrocarbon)
3. Product depends on oxygen supply

6. II. Electrons and Reactions
A. Electrons transfer in redox reactions
1. Oxidation-Reduction Reaction
2. One element loses electrons
(oxidizes) and one gains
(reduction)
Think…..OIL RIG….or….LEO says ‘GER’
B. Radicals- organic group that has
one or more electrons available for
bonding

7. 6.2 Concept Review Worksheet, Reaction Classification
Homework
6.2 Concept Review Worksheet, Reaction Classification
Classroom Survey