Magnesium and Oxygen atoms would cause an ionic compound.
I believe the answer is D
Answer:
An open system is :-
B. A system that allows energy and mass to move in and out of it.
Example :-
Water boiling in a pot on a stove. (Without lid).
Answer:
<em>It is a chemical reaction in which the reactants form products and products react together to give reactants back. That means reversible reactions can go in both directions forward as well as backward direction.</em>
