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Batteries and Electricity quiz

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Terms in this set (15)

  • What type of cell are batteries considered to be?
    Batteries are considered portable galvanic or voltaic cells that generate electricity.
  • What is the main difference in nature between dry cell and alkaline batteries?
    Dry cell batteries are acidic in nature, while alkaline batteries are basic.
  • Why are dry cell batteries called 'dry'?
    They are called 'dry' because they lack a large amount of liquid water.
  • What does the carbon rod represent in a dry cell battery?
    The carbon rod represents the positive electrode (cathode) in a dry cell battery.
  • What is the function of the zinc sleeve in a dry cell battery?
    The zinc sleeve acts as the negative electrode (anode) in a dry cell battery.
  • Where does oxidation occur in a dry cell battery?
    Oxidation occurs at the anode, which is the zinc sleeve in a dry cell battery.
  • What is the damp portion of a dry cell battery composed of?
    The damp portion is composed of manganese(IV) oxide and ammonium chloride.
  • Why is ammonium chloride considered weakly acidic?
    Ammonium chloride is weakly acidic because the ammonium ion is weakly acidic, while the chloride ion is neutral.
  • How is the standard cell potential calculated for a battery?
    The standard cell potential is calculated as the cathode potential minus the anode potential.
  • What is the standard cell potential for a typical dry cell battery?
    The standard cell potential for a dry cell battery is 1.50 volts.
  • What does 'alkaline' mean in the context of batteries?
    Alkaline means the battery is basic in nature.
  • What paste is used in alkaline batteries?
    Alkaline batteries use a potassium hydroxide paste.
  • What is the negative electrode in an alkaline battery?
    The negative electrode in an alkaline battery is the zinc sleeve.
  • What is the role of manganese(IV) oxide in both dry cell and alkaline batteries?
    Manganese(IV) oxide acts as part of the cathode material in both types of batteries.
  • What covers the outside of an alkaline battery?
    A steel sleeve or steel case covers the outside of an alkaline battery.