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Questions and Answers
What type of reaction occurs when two substances combine to form one substance?
What type of reaction occurs when two substances combine to form one substance?
Decomposition reactions result in two new substances being formed from one substance.
Decomposition reactions result in two new substances being formed from one substance.
True
What is the chemical equation for a synthesis reaction?
What is the chemical equation for a synthesis reaction?
A + B → AB
In a decomposition reaction, one substance breaks down into ______ substances.
In a decomposition reaction, one substance breaks down into ______ substances.
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Match the following types of reactions with their definitions:
Match the following types of reactions with their definitions:
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Study Notes
Types of Chemical Reactions
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Synthesis Reactions: Two or more substances combine to form a single product.
- Represented by the general equation: A + B → AB
- Example: 2H₂ + O₂ → 2H₂O (Hydrogen and oxygen react to form water)
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Decomposition Reactions: A single compound breaks down into two or more simpler substances.
- Represented by the general equation: AB → A + B
- Example: 2H₂O → 2H₂ + O₂(Water decomposes to hydrogen and oxygen)
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Single Displacement Reactions: One element replaces another element in a compound.
- Example: A + BC → AC + B (Element A replaces element B in the compound BC)
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Double Displacement Reactions: Two compounds exchange ions to form two different compounds.
- Example: AB + CD → AD + CB (Elements A and C swap places)
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Combustion Reactions: A substance reacts rapidly with oxygen, usually producing heat and light.
- Example: hydrocarbons + O₂ → CO₂ + H₂O (e.g., a match burning)
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Description
This quiz explores the various types of chemical reactions, including synthesis, decomposition, single and double displacement, and combustion reactions. Test your understanding of these fundamental concepts in chemistry through examples and general equations.
