Chemistry B Unit 4 Electrochemical Cells

What is NOT true of a voltaic cell?

• It is made up of 2 half cells.

• It converts electrical energy to chemical energy

• The redox reaction is spontaneous.

• It converts chemical energy to electrical energy.

What separates the half cells in a voltaic cell?

• electrodes

• wire

• voltmeter

• salt bridge

How do electrons flow in a voltaic cell?

• electrons flow through the salt bridge

• electrons flow from the cathode to the anode

• electrons flow from the anode to the cathode

• electrons do not flow

In a voltaic cell the cathode is

• positive

• negative

• neutral

In an electrolytic cell, oxidation occurs at the _________.

• cathode

• anode

What happens at the cathode of an electrolytic cell?

• oxidation

• reduction

What is NOT true of an electrolytic cell?

• It converts electrical energy into chemical energy

• The redox reaction is not spontaneous

• Electrons are caused to flow by an outside power source such as a battery.

• The redox reaction is spontaneous

In an electrolytic cell, the anode is ______________.

• positive

• negative

• neutral

In an electrolytic cell, the negative electrode is called the _________.

• anode

• cathode

In a voltaic cell, the anode is _____________.

• neutral

• positive

• negative