I would assume that the magnesium would have to come into contact with an ion in order to become a magnesium ion.
Answer: what do you mean ''beyond certain temperature'', Do you mean ask in cooling the liquid down or heating the liquid up?
Explanation:
Telepathy duhh like when SpongeBob stared at Patrick he know they where thinking the same thing or maybe that was because they are both idiots i dont know <span />