Questions and Answers
List the five types of chemical reactions.
Combustion, Synthesis, Decomposition, Single Displacement, Double Displacement
Describe a combustion reaction.
A combustion reaction occurs when oxygen combines with another compound to form water and carbon dioxide. These reactions are exothermic, meaning they produce heat.
Describe a synthesis reaction.
A synthesis reaction occurs when two or more simple compounds combine to form a more complicated one.
What is the general form of a synthesis reaction?
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Describe a decomposition reaction.
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What is the general form of a decomposition reaction?
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Describe a single displacement reaction.
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What is the general form of a single displacement reaction?
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Describe a double displacement reaction.
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What is the general form of a double displacement reaction?
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What kind of reaction is this: 2H2O --> 2H2 + O2?
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What kind of reaction is this: C10H8 + 12O2 --> 10CO2 + 4H2O?
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What kind of reaction is this: Mg + 2H2O --> Mg(OH)2 + H2?
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What kind of reaction is this: 8Fe + S8 --> 8FeS?
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What kind of reaction is this: Pb(NO3)2 + 2KI --> PbI2 + 2KNO3?
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Study Notes
Types of Chemical Reactions
- Five primary types of chemical reactions: Combustion, Synthesis, Decomposition, Single Displacement, Double Displacement.
Combustion Reaction
- Involves oxygen combining with another compound, resulting in water and carbon dioxide production.
- These reactions are exothermic and release heat.
Synthesis Reaction
- Occurs when two or more simple compounds form a more complex compound.
- General form: A + B --> AB.
Decomposition Reaction
- Involves the breakdown of a complex molecule into simpler ones.
- General form: AB --> A + B.
Single Displacement Reaction
- Involves one element switching places with another element in a compound.
- General form: A + BC --> AC + B.
Double Displacement Reaction
- Occurs when anions and cations of two different molecules exchange places, creating two new compounds.
- General form: AB + CD --> AD + CB.
Identifying Reaction Types
- Decomposition example: 2H2O --> 2H2 + O2.
- Combustion example: C10H8 + 12O2 --> 10CO2 + 4H2O.
- Single displacement example: Mg + 2H2O --> Mg(OH)2 + H2.
- Synthesis example: 8Fe + S8 --> 8FeS.
- Double displacement example: Pb(NO3)2 + 2KI --> PbI2 + 2KNO3.
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Description
Explore the five primary types of chemical reactions, including Combustion, Synthesis, Decomposition, Single Displacement, and Double Displacement. Each reaction type is defined with examples and general forms. Test your knowledge of these fundamental concepts in chemistry.
