Batteries Quizizz lesson

Galvanic Cells Basics

Year 11 Chemistry

​What is a galvanic cell?

​A device where a chemical reaction occurs that produces electricity

​

• ​Batteries are galvanic cells

• ​Conversion of chemical energy into electrical energy

• Uses redox reactions because of the movement of electrons

  • the electrons flow through a set up wire and generate a current/electricity

​Parts of a Galvanic Cell

• ​Electrodes

  • Cathode - where reduction occurs

  • Anode ​- where oxidation occurs

• Solutions

  • an electrolyte solution that can conduct electricity

• Salt bridge

  • provides electric​al contact between the two solutions and completes the circuit

  • keeps charge balance

​How does a galvanic cell work?

• Metal electrodes are placed in their respective electrolyte solutions

• ​The redox reactions begin

• In this example:

  • The zinc anode is where oxidation occurs - zinc enters the solution from the electrode - loss

  • The copper cathode is where reduction occurs - copper attaches to the electrode from the solution - gain

• Electrons flow between two half cells, from negative terminal to positive terminal

• The salt bridge completes the circuit

Multiple Choice

In a Galvanic Cell, the anode is...

• where reduction takes place

• where oxidation takes place

Multiple Choice

In a Galvanic Cell, the cathode is...

• where reduction takes place

• where oxidation takes place

Multiple Choice

Oxidation is ___________.

• losing electrons

• gaining electrons

Multiple Choice

Reduction is ___________.

• losing electrons

• gaining electrons

Multiple Choice

In a Galvanic Cell, the salt bridge...

• completes the circuit so that electrons can flow through the wire

• maintains charge balance

• all of the above