Flashcards and recall.

Try this with Chemistry

1. Write one prompt per card. Use definitions, explanations or examples from your current topic.
2. Answer aloud before turning the card. Split a card if it asks for several unrelated facts.
3. Set aside missed cards and revisit them in a later session.

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Recall topics

• Define oxidation.
• Define reduction.
• What is an oxidising agent?
• What is a reducing agent?
• Explain oxidation state.
• In a redox reaction, which element is oxidised and which is reduced?
• How do you identify the oxidising agent in Zn + Cu²⁺ → Zn²⁺ + Cu?
• What does oxidation state = ionic charge for?
• In permanganate MnO₄⁻, what is manganese's oxidation state?
• Distinguish a spontaneous redox reaction from a galvanic cell.
• What is a half-equation?
• In acidic solution, which species balance oxygen in a half-equation?
• Which species balance hydrogen in acidic half-equations?
• In the half-equation MnO₄⁻ → Mn²⁺, how many electrons are transferred?
• Balance the reduction half-equation for permanganate in acid.
• What charge balance check should you perform after adding electrons?
• How do you combine two half-equations?
• In the dichromate reduction Cr₂O₇²⁻ → Cr³⁺ in acid, how many electrons are gained?
• Balance Cr₂O₇²⁻(aq) + 14H⁺(aq) → 2Cr³⁺(aq) + ?
• After combining and cancelling half-equations, what must be verified?
• What is standard reduction potential (E°)?
• Define the standard hydrogen electrode.
• How do you calculate E°cell?
• What does E°cell > 0 tell you about a reaction?
• What does E°cell < 0 tell you?
• In a galvanic cell, is the cathode where oxidation or reduction occurs?
• Which half-reaction has the higher E° value: the cathode or anode in a galvanic cell?
• Use E° values to determine if Cu²⁺ can oxidise Fe to Fe²⁺.
• Define a conjugate redox couple.
• How does increasing concentration of a reactant affect its role in determining spontaneity?
• What is a galvanic cell?
• What is cell notation (cell diagram)?
• What does the double line || represent in cell notation?
• What is the role of a salt bridge in a galvanic cell?
• In a galvanic cell, electrons flow from which electrode to which?
• In a galvanic cell, how do anions move in the internal circuit?
• In a galvanic cell, how do cations move in the internal circuit?
• What type of electrode is used in a cell when the electrode itself is not a reactant?
• Why might copper not be suitable as an electrode in a permanganate reduction?
• How is voltage (cell potential) measured in a galvanic cell?