Introduction to Electrochemistry

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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?

Successful completion of the circuit Signup and view all the answers

What happens at the cathode in an electrochemical cell?

Electrons are gained 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?

Impure zinc-coated nail Signup and view all the answers

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

Transfer electrons between electrodes Signup and view all the answers

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

To prevent charge build-up Signup and view all the answers

What is the main purpose of electrochemistry?

To transform chemical energy into electrical energy Signup and view all the answers

What happens in an electrochemical cell?

Chemical energy is converted into electrical energy Signup and view all the answers

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

To conduct electricity Signup and view all the answers

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

Cathode Signup and view all the answers

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

To complete the circuit for electron flow Signup and view all the answers

Why are batteries considered examples of electrochemistry?

Because they transform chemical energy to electrical energy Signup and view all the answers

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

Copper strip Signup and view all the answers