Sel Kimia

If an atom loses electrons during a chemical reaction, the atom was:

• Oxidized
• Reduced
• Neutralized
• Precipitated

Tags

NGSS.HS-PS1-2

What reaction occurs at the anode?

• Ag⁺ + e^- →Ag
• Ag → Ag⁺ + e^-
• Ni²⁺ + 2e^- → Ni
• Ni → Ni²⁺ + 2e^-

Tags

NGSS.HS-PS1-2

Reduction happens at the 

• anode
• cathode
• salt bridge
• voltmeter

In a voltaic cell the ions flow through the 

• wire
• salt bridge

Reduction occurs at the 

• anode
• cathode

What is an electrolytic cell? 

• a cell that converts chemical energy into electrical energy 
• a cell that converts electrical energy into electrical energy 
• a cell that converts electrical energy into chemical energy 
• A cell that converts kinetic energy into potential energy. 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Reduction happens at the 

• anode
• cathode
• salt bridge
• voltmeter

Reactions in voltaic cells are

• spontaneous, redox reactions
• non-spontaneous, redox reactions
• spontaneous, non-redox reactions
• non-spontaneous, non-redox reactions

In a voltaic cell, electrodes used are copper (electrolyte: copper (II) sulphate solution) and zinc (electrolyte: zinc nitrate solution). What is the half-equation that occur at the copper electrode?

• Cu --> Cu2+ + 2e

• 2H+ + 2e --> H2

• Cu2+ + 2e --> Cu

In voltaic cell, the two electrodes used are copper and zinc.

Which electrode act as negative terminal?

• zinc electrode

• copper electrode