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Questions and Answers
What is a characteristic of a synthesis reaction?
What is a characteristic of a synthesis reaction?
- It involves the breakdown of a compound.
- It forms a single product from two or more reactants. (correct)
- It produces multiple products from a single reactant.
- It strictly requires an organic reactant.
Which type of reaction is characterized by the exchange of ions between reactants?
Which type of reaction is characterized by the exchange of ions between reactants?
- Synthesis reaction
- Decomposition reaction
- Double replacement reaction (correct)
- Single replacement reaction
In which type of chemical reaction is a compound broken down into simpler substances?
In which type of chemical reaction is a compound broken down into simpler substances?
- Combustion reaction
- Decomposition reaction (correct)
- Synthesis reaction
- Redox reaction
Which reaction type typically releases energy in the form of heat or light?
Which reaction type typically releases energy in the form of heat or light?
In a single replacement reaction, which statement is true?
In a single replacement reaction, which statement is true?
Flashcards
Exothermic Reactions
Exothermic Reactions
Chemical reactions that release energy and produce heat into the surrounding environment.
Endothermic Reactions
Endothermic Reactions
Chemical reactions that absorb energy from the environment and require energy input.
Bond Breaking & Formation
Bond Breaking & Formation
When bonds are formed, energy is released, and the reaction is exothermic.
When bonds are broken, energy is absorbed, and the reaction is endothermic.
Activation Energy
Activation Energy
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Catalyst
Catalyst
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Study Notes
Types of Chemical Reactions
-
Synthesis (S) Reaction: Two or more reactants combine to form a single product.
- Example: 2 Na + Cl₂ → NaCl
-
Decomposition (D) Reaction: A compound breaks down into its separate elements.
- Example: 2 H₂O → 2H₂ + O₂
-
Single Replacement (SR) Reaction: One element replaces another element in a compound.
- Example: 2 Al + 3 CuCl₂ → 3 Cu + 2 AlCl₃
-
Double Replacement (DR) Reaction: The elements in two compounds switch places to form two new compounds.
- Example: Pb(NO₃)₂ + 2NaI → PbI₂ + 2NaNO₃
-
Neutralization (N) or Acid-Base Reaction: An acid and a base react to form a salt and water.
- Example: H₂SO₄ + Ca(OH)₂ → CaSO₄ + 2H₂O (sulfuric acid + calcium hydroxide → calcium sulfate + water)
-
Combustion (C) Reaction: A compound/element reacts with oxygen to produce an oxide and heat energy.
- Examples:
- CH₄ + 2O₂ → CO₂ + 2H₂O
- 2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
- Examples:
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