Chapter 6 Chemical Reactions

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Chapter 6Chemical Reactions

• Section 2
• Reaction Types
• p. 190

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Objectives

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

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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
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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
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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
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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
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Homework

• 6.2 Concept Review Worksheet, Reaction
  Classification
• Classroom Survey