Experiment of December 8, 2018:

The time to submit an answer is over. You can now view the solution of the experiment.

Solution video:

Experiment:

Question:

What does Mr. Santa observe?

A) The negative pole of the aluminium foil turns red

B) The positive pole of the aluminium foil turns green

C) Gas bubbles rise at the ends of the aluminium foil

D) Salt is deposited at the ends of the aluminium foil