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Types of Chemical Reactions: Flashcards

Revise synthesis, decomposition, single and double displacement and combustion, and the activity series.

10 cardsBeginner

10 cards

  1. Question
    Give the general pattern of a synthesis and a decomposition reaction.
    Answer

    Synthesis: A + B → AB. Decomposition: AB → A + B.

  2. Question
    Give the general pattern of single and double displacement.
    Answer

    Single: A + BC → AC + B. Double: AB + CD → AD + CB.

  3. Question
    What are the products of complete combustion of a hydrocarbon?
    Answer

    Carbon dioxide and water.

  4. Question
    What does incomplete combustion produce?
    Answer

    Carbon monoxide (CO) and/or soot (C), as well as water.

  5. Question
    When does a single displacement reaction happen?
    Answer

    When the free element is more reactive (higher in the activity series) than the element it replaces.

  6. Question
    Does Cu react with ZnSO₄ solution?
    Answer

    No: copper is below zinc in the activity series.

  7. Question
    When does a double displacement reaction happen?
    Answer

    When a precipitate, water or a gas forms.

  8. Question
    What do metal carbonates give when heated?
    Answer

    The metal oxide and carbon dioxide, e.g. CaCO₃ → CaO + CO₂.

  9. Question
    Which metals displace hydrogen from acids?
    Answer

    Metals above hydrogen in the activity series (e.g. Mg, Zn, Fe), not Cu, Ag or Au.

  10. Question
    Balance the complete combustion of propane, C₃H₈.
    Answer

    C₃H₈ + 5O₂ → 3CO₂ + 4H₂O