AP Chapter 20

Reduction happens at the 

• Spa
  anode
• Cathode
• Salt bridge
• Anode

Oxidation happens at the

• Anode
• Cathode
• Salt bridge
• Voltmeter

This electrode in a voltaic cell gains mass

• Anode
• Cathode

This electrode in a voltaic cell loses mass 

• Anode
• Cathode

In a voltaic cell, the half cell that receives anions from the salt bridge is

• Cathode
• Anode

In a voltaic cell, the half cell that receives cations from the salt bridge is

• Cathode
• Anode

What unit of measurement do we use to measure electrical potential?

• Watts
• Volts
• Amps
• Ohms

In which direction does electricity flow in a voltaic cell (battery)?

• Electrons flow from the cathode to the anode
• Electrons flow from left to right
• Electrons flow from anode to cathode
• Electrons flow from right to left

Is calcium oxidized or reduced in the following reaction? 
2CaO--> 2Ca + O₂

• Oxidized
• Reduced

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

In a voltaic cell, the salt bridge is necessary for

• the movement of electrons to create a current
• the movement of ions to create a current
• the movement of electrons to maintain the neutrality of solution
• the movement of ions to maintain the neutrality of solution