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- 1. Multiple Choice
What is the energy conversion in a chemical cell?
from chemical energy to electrical energy
from electrical energy to chemical energy
- 2. Multiple Choice
In a chemical cell, electrons flow from the positive electrode to the negative electrode in the external circuit.
True
False
- 3. Multiple Choice
For a simple chemical cell, the farther apart the two metals are in the electrochemical series, the higher the voltage of the cell.
True
False
- 4. Multiple Choice
In a Daniell cell, the negative electrode is a zinc strip and the positive electrode is a copper container.
True
False
- 5. Multiple Choice
A salt bridge can be prepared by soaking a piece of filter paper in sugar solution.
True
False
- 6. Multiple Choice
A salt bridge provides ions that move into the half-cells to prevent the build-up of excess positive or negative ions in the solution of each half-cell.
True
False
- 7. Multiple Choice
In which of the following cells will the light bulb shine most brightly?
- 8. Multiple Choice
Which of the following metals loses electrons to form ions most readily?
Zinc
Copper
Magnesium
Silver
- 9. Multiple Choice
Consider the chemical cell shown above. Electrons flow from the strip of metal X to the copper strip in the external circuit.
Which of the following statements concerning the above set-up is correct?
The copper strip is the positive electrode.
The mass of the copper strip decreases.
The mass of metal X increases.
Copper is at a higher position in the electrochemical series than metal X.
- 10. Multiple Choice
Consider the above lemon cell:
The voltage of the cell can be increased by
increasing the distance between the zinc and copper strips.
decreasing the length of the zinc and copper strips in the lemon.
replacing the lemon by an apple.
replacing the zinc strip with a magnesium strip.
- 11. Multiple Choice
Consider the chemical cell shown above. Electrons flow from the metal X rod to the iron rod in the external circuit.
Which of the following statements concerning the above chemical cell is INCORRECT?
Metal X forms ions more readily than iron.
The metal X rod dissolves gradually.
The iron rod is the negative electrode.
Sodium chloride solution can be used as the electrolyte.
- 12. Multiple Choice
Three chemical cells are shown below.
From the above results, the descending order of the tendency to form ions for the metals is
Fe, Mn, Cu, Ag.
Ag, Cu, Fe, Mn.
Mn, Fe, Cu, Ag.
Mn, Fe, Ag, Cu.
- 13. Multiple Choice
A
B
C
D
- 14. Multiple Choice
X and Z are metals. X reacts with Z(NO3)2 solution according to the following equation:
X(s) + Z2+(aq) -----> X2+(aq) + Z(s)
X and Z are used as the electrodes in a chemical cell with sodium chloride solution as the electrolyte.
Which of the following statements concerning the chemical cell is correct?
Electrons flow from X to Z in the external circuit.
Electrons flow from Z to X in the sodium chloride solution.
Z dissolves gradually.
The mass of X increases.
- 15. Multiple Choice
A
B
C
D
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