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Electrolysis

Nerisa Nurul B
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Question 1

Multiple Choice

What is electrolysis?

  • breaking down of a compound using a current
  • making a compound using a current

Question 2

Multiple Choice

What kind of Electrical Current does Electrolysis require?

  • Direct
  • Indirect
  • Anternative
  • A alternating

Question 3

Multiple Choice

Which statement correctly describes the 2 electrodes?

  • The anode is negative and the cathode is positive
  • The anode is positive and the cathode is negative
  • The anode and cathode are both positive
  • The anode and cathode are both negative.

Question 4

Multiple Choice

What is the name given to the solution that is being electrolysed?

  • salt solution
  • electrolyte
  • electric solution
  • mineral solution

Question 5

Multiple Choice

Explain why the electrolyte has to be a liquid!

  • So the electrons can move
  • So the ions can move
  • So that it doesn't get too hot
  • so, the current can flow through it

Question 6

Multiple Choice

What happens at the positive electrode?

  • Negative metal ions are attracted
  • Negative non-metal ions are attracted
  • Positive metal ions are attracted
  • Positive non-metal ions are attracted

Question 7

Multiple Choice

Positive ions (cations) will move towards the cathode (-) where they will discharge by....

  • breaking apart
  • losing electrons
  • gaining electron
  • clumping together

Question 8

Multiple Choice

When NaCl solution is electrolysed what has forms at the anode?

  • chlorine
  • hydrogen
  • oxygen
  • sodium

Question 9

Multiple Choice

What is the equation to show what happens to Cl ions at the anode?

  • Cl- --> Cl + e-
  • 2Cl- --> Cl2 + 2e-
  • Cl2 + 2e- --> 2Cl-
  • Cl2 + 2e- --> 2Cl-

Question 10

Short Answer

Predict the electrolysis products at the anode and cathode when molten aluminium iodide is electrolysed.

  • aluminium and iodine

  • iodine and aluminium

Question 11

Short Answer

Predict the electrolysis products at the anode and cathode when aqueous solution of magnesium chloride is electrolysed.

  • hydrogen gas and chlorine gas

  • hydrogen and chlorine

  • chlorine and hydrogen

  • H2 and Cl2

  • Cl2 and H2

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