Voltaic Cells

A salt bridge is used for what?

• electrolysis

• allowing ions to move from one half-cell to the other

• increasing the reduction potential

• linking multiple voltaic cells together

Tags

NGSS.HS-PS2-5

Which of the following is NOT true about batteries?

• Batteries are composed of two half-cells.

• Redox reactions in zinc-carbon batteries are easily reversible.

• Secondary batteries are also known as storage batteries.

• Batteries are compact forms of voltaic cells.

What typically serves as the anode of a heavy duty dry cell battery?

• carbon rod

• zinc shell

• Ag₂O in graphite

• Zn in KOH gel

What typically serves as the cathode of a heavy duty dry cell battery?

• carbon rod

• zinc shell

• Ag₂O in graphite

• Zn in KOH

The measure of potential energy stored in a battery is called _________.

• potentiometer

• capacity

• voltage

• resistance

Tags

NGSS.HS-PS3-1

What is the cathode of a silver battery?

• carbon rod

• zinc shell

• Zn in KOH

• Ag₂O in graphite

Reactions in voltaic cells are

• spontaneous, redox reactions

• non-spontaneous, redox reactions

• spontaneous, non-redox reactions

• non-spontaneous, non-redox reactions

Which energy conversion shown below takes place in a voltaic cell?

• Electrical to chemical

• Mechanical to chemical

• Mechanical to electrical

• Chemical to electrical

Tags

NGSS.HS-PS3-2

This electrode in a voltaic cell gains mass

• anode

• cathode

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