Yr 12 Electrochemistry

Which energy conversion shown below takes place in an electrochemical cell?

• Electrical to chemical
• Mechanical to chemical
• Mechanical to electrical
• Chemical to electrical

Tags

NGSS.HS-PS3-2

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

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

• Cathode
• Anode

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

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What does OIL RIG mean?

• It's a pump used to remove oil from the ground
• Oxidation is losing protons, reduction is gaining protons
• Oxidation is losing electrons, reduction is gaining electrons
• Who knows?

Tags

NGSS.HS-PS1-2

In the reaction
2Ca(s) + O₂(g) --> 2CaO(s), calcium is __________

• Reduced
• Synthesized
• Oxidized
• None of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What occurs to the mass of zinc electrode in the following reaction?
Zn/Zn+2 // Ag+1 / Ag

• increases
• decreases
• remains the same

What does the double line mean?
Zn/Zn+2 // Cu+2/Cu

• anode
• cathode
• salt bridge
• substance in contact