Introduction to Electrochemistry
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Questions and Answers

Which electrode in an electrochemical cell is responsible for oxidation?

  • Anode (correct)
  • Cathode
  • Wire
  • Zinc

What is the purpose of the porous barrier or salt bridge in an electrochemical cell?

  • Accelerate the redox reaction
  • Prevent charge from building up on the electrodes (correct)
  • Increase the flow of electrons
  • Isolate the two electrodes completely

Which part of an electrochemical cell experiences a reduction reaction?

  • Cathode (correct)
  • Electrolyte solution
  • Wire
  • Anode

In a homemade lemon battery, what does the LED light up indicate?

<p>Successful completion of the circuit (B)</p> Signup and view all the answers

What happens at the cathode in an electrochemical cell?

<p>Electrons are gained (A)</p> Signup and view all the answers

If a student's LED does not light up in a lemon battery experiment, what could be a likely reason?

<p>Impure zinc-coated nail (C)</p> Signup and view all the answers

What is the role of the wire in an electrochemical cell circuit?

<p>Transfer electrons between electrodes (B)</p> Signup and view all the answers

Why are the two electrodes in an electrochemical cell placed in separate compartments?

<p>To prevent charge build-up (A)</p> Signup and view all the answers

What is the main purpose of electrochemistry?

<p>To transform chemical energy into electrical energy (D)</p> Signup and view all the answers

What happens in an electrochemical cell?

<p>Chemical energy is converted into electrical energy (A)</p> Signup and view all the answers

In an electrochemical cell, what is the function of the electrolyte?

<p>To conduct electricity (A)</p> Signup and view all the answers

Which part of an electrochemical cell is where reduction takes place?

<p>Cathode (D)</p> Signup and view all the answers

What is the purpose of the wire connecting the cathode and anode in an electrochemical cell?

<p>To complete the circuit for electron flow (A)</p> Signup and view all the answers

Why are batteries considered examples of electrochemistry?

<p>Because they transform chemical energy to electrical energy (B)</p> Signup and view all the answers

Which component of a battery acts as the electrode where electrons are gained?

<p>Copper strip (D)</p> Signup and view all the answers

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