Asked by Matt

Is Magnesium Oxide reactive? If it is, can you please explain how reactive it is? Thanks so much!
Answered by bobpursley
One has to define reactive. Magnesium oxide hydrates easily, and is exothermic. It makes a great cement when mixed with magnesium cloride and water (with of course, sand, gravel, or whatever).

http://en.wikipedia.org/wiki/Sorel_cement
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