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Chemical Reaction Chemical Reaction TypesTypes
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5 Reaction Types5 Reaction Types
SynthesisDecompositionCombustionSingle ReplacementDouble Replacement
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Synthesis ReactionsSynthesis Reactions
Two substances react to form a single product.
X + Y XY
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Simple compounds make more complex ones.
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Decomposition Decomposition ReactionsReactions
A single reactant decomposes or breaks down into two or more products.
A B + C(decomposition of a metal chlorate or metal carbonate are the most common)
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More complex compounds make less
complex ones.
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Combustion ReactionsCombustion Reactions
One reactant (fuel) combines with oxygen to produce an oxide and water.
Fuel + O2 oxide + H2O
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The substance reacts with O2 in an exothermic
reaction.
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Two Types of Two Types of Combustion ReactionsCombustion Reactions
Incomplete combustion:CxHy + 02 CO + H20
Complete Combustion:CxHy + O2 CO2 + H2O
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Single Replacement Single Replacement ReactionsReactions
One, more reactive element, replaces another.
M + AX MX + A
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One atom takes the place of another.
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Two Types of Single Two Types of Single Replacement ReactionsReplacement Reactions
Single Replacement of a Halogen:Z2 + AX AZ + X2
Single Replacement of a Metal:M + AX MX + A
HINT: LOOK AT 1ST REACTANT!!
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Double Replacement Double Replacement ReactionsReactions
A reaction in which the cations and anions of both reactants switch partners.
AX + DZ AZ + DX
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Two atoms trade places.
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Activity SeriesActivity Series
A list of elements in order of their chemical reactivity and are useful I predicting whether a chemical reaction will occur.– For metals- greater activity means an
ability to lose electrons easily.– For non-metals- greater activity means
an ability to gain electrons easily.
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Activity of MetalsActivity of Metals Using the activity series shown
in Table 8-3, predict whether each of the possible reactions listed below will occur.
a. Cr(s) + H20(l)
b. Pt(s) + 02(g)c. Cd(s) + 2HBrd. Mg(s) + steam
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Reaction Type ReviewReaction Type Review
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Simple compounds make Simple compounds make more complex ones.more complex ones.
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One atom takes the place of another.
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More complex More complex compounds make less compounds make less
complex ones.complex ones.
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Two atoms trade places.
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The substance reacts The substance reacts with Owith O22 in an in an
exothermic reaction.exothermic reaction.
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The End