Questions and Answers
What type of reaction occurs when two or more reactants combine to form a single product?
Combination reaction
What is the formula for a decomposition reaction?
XY = X + Y
What type of reaction occurs when a more reactive element removes a less reactive element from its aqueous salt solution?
Displacement reaction
What is an example of a combination reaction?
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What type of reaction involves the breakdown of a chemical into two or more smaller components?
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Which type of reaction has the same formula as a synthesis reaction?
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What occurs when a chemical decomposes as a result of heating?
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Which reaction type is the exact inverse of a combination reaction?
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What is the general formula for a displacement reaction?
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Which reaction involves the removal of a less reactive element from its aqueous salt solution?
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What is the name of the reaction that involves the breakdown of a chemical into two or more smaller components?
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Which reaction has the formula XY = X + Y?
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Study Notes
Types of Chemical Reactions
- There are five main types of chemical reactions: combination, decomposition, displacement, double displacement, and precipitation reactions.
Combination Reaction
- A combination reaction occurs when two or more reactants combine to form a single product.
- The formula for a combination reaction is X + Y = XY.
- Also known as a synthesis reaction.
- Example: 2Na + Cl2 = 2NaCl.
Decomposition Reaction
- A decomposition reaction occurs when a single chemical breaks down into two or more smaller components.
- The formula for a decomposition reaction is XY = X + Y.
- The exact inverse of a combination reaction.
- Example: CaO + CO2 = CaCO3.
- A thermal decomposition reaction occurs when a chemical decomposes as a result of heating.
Displacement Reaction
- A displacement reaction occurs when a more reactive element removes a less reactive element from its aqueous salt solution.
- The formula for a displacement reaction is X + YZ = XZ + Y.
- Also known as a substitution reaction.
- Example: Zn + CuSO4 = ZnSO4 + Cu.
Types of Chemical Reactions
- There are five main types of chemical reactions: combination, decomposition, displacement, double displacement, and precipitation reactions.
Combination Reaction
- A combination reaction occurs when two or more reactants combine to form a single product.
- The formula for a combination reaction is X + Y = XY.
- Also known as a synthesis reaction.
- Example: 2Na + Cl2 = 2NaCl.
Decomposition Reaction
- A decomposition reaction occurs when a single chemical breaks down into two or more smaller components.
- The formula for a decomposition reaction is XY = X + Y.
- The exact inverse of a combination reaction.
- Example: CaO + CO2 = CaCO3.
- A thermal decomposition reaction occurs when a chemical decomposes as a result of heating.
Displacement Reaction
- A displacement reaction occurs when a more reactive element removes a less reactive element from its aqueous salt solution.
- The formula for a displacement reaction is X + YZ = XZ + Y.
- Also known as a substitution reaction.
- Example: Zn + CuSO4 = ZnSO4 + Cu.
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