Chemical Reaction: Copper Oxide Reduction
18 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What type of reaction occurs when a single substance decomposes to give two or more substances?

  • Double displacement reaction
  • Decomposition reaction (correct)
  • Combination reaction
  • Exothermic reaction
  • In which type of reaction does a displacement reaction occur when an element displaces another element from its compound?

  • Decomposition reaction
  • Precipitation reaction
  • Combination reaction
  • Reduction reaction (correct)
  • What is oxidation defined as in a chemical reaction?

  • Gain of oxygen (correct)
  • Gain of hydrogen
  • Loss of hydrogen
  • Loss of oxygen
  • Which type of reactions produce insoluble salts?

    <p>Precipitation reactions</p> Signup and view all the answers

    In an exothermic reaction, what is characteristic of the heat?

    <p>Heat is released</p> Signup and view all the answers

    What is reduction defined as in a chemical reaction?

    <p>Loss of hydrogen</p> Signup and view all the answers

    What happens to a substance if it gains oxygen during a reaction?

    <p>It is oxidised</p> Signup and view all the answers

    If a substance loses oxygen during a reaction, what is the term used to describe this process?

    <p>Reduced</p> Signup and view all the answers

    In the reaction MnO2 + 4HCl → MnCl2 + 2H2O + Cl2, what is happening to MnO2?

    <p>It is reduced</p> Signup and view all the answers

    During the reaction ZnO + C → Zn + CO, what is happening to ZnO?

    <p>It is reduced</p> Signup and view all the answers

    If a substance gains oxygen or loses hydrogen during a reaction, what is the term used to describe this process?

    <p>Oxidised</p> Signup and view all the answers

    When a magnesium ribbon burns with a dazzling flame in air and changes into magnesium oxide, is magnesium being oxidised or reduced?

    <p>Oxidised</p> Signup and view all the answers

    In the reaction 2PbO(s) + C(s) → 2Pb(s) + CO2(g), which statement is incorrect?

    <p>Carbon dioxide is getting oxidised.</p> Signup and view all the answers

    What type of reaction is Fe2O3 + 2Al → Al2O3 + 2Fe?

    <p>Displacement reaction.</p> Signup and view all the answers

    When dilute hydrochloric acid is added to iron fillings, what is produced?

    <p>Hydrogen gas and iron chloride.</p> Signup and view all the answers

    What is the purpose of balancing a chemical equation?

    <p>To ensure the mass is conserved in the reaction.</p> Signup and view all the answers

    Which statement can be correctly translated into a balanced chemical equation?

    <p>Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.</p> Signup and view all the answers

    Balance the following chemical equation: BaCl2 + H2SO4 → BaSO4 + HCl.

    <p>BaCl2 + 2H2SO4 → Ba(SO4)2 + 2HCl</p> Signup and view all the answers

    More Like This

    Untitled
    1 questions

    Untitled

    SpectacularDiscernment avatar
    SpectacularDiscernment
    Copper Oxide Reduction with Hydrogen
    5 questions
    Use Quizgecko on...
    Browser
    Browser