Mini Quiz 2

Q1: What is observed during the electrolysis of aqueous copper(II) sulfate using carbon electrodes?

Q2: Which change always takes place when an aqueous solution of copper(II) sulfate is electrolysed?

Q3: A simple cell can be using two different metals as the electrodes and an aqueous solution as the electrolyte.

Which statements about the simple cell are correct?

1. 1. A greater voltage is produced using magnesium and silver than using magnesium and copper.
   2. The electrolyte is an aqueous solution containing both positive and negative ions.
   3. The more reactive metals will release electrons.

Q4: Which statements are true about all the noble gases?

Which statements are true about all the noble gases?

1. The number of protons in their atoms equals the number of
2. The number of protons in their atoms does not equal the number of
3. They all have eight electrons in their outer shell.
4. They do not react to form ionic compounds.

Q5: What happens when a strip of silver is immersed in aqueous copper(II) sulfate?

Q6. What happens when zinc foil is placed in an aqueous solution of copper(II) sulfate?

Q7. Which element can only be extracted from its ore using electrolysis?