How do you write a balanced equation for the combination of magnesium and oxygen to form magnesium oxide, #MgO#?
First, we need to identify the type of bond and reaction. This is an ionic bond so atoms are giving and accepting electrons. This is a synthesis reaction.
Magnesium has a charge of
#2 Mg (s) + O_"2" (g) -> 2 MgO#
Oxygen is a diatomic molecule and is almost always reacting with elements as a gas,
Here is a short video showing the reaction of magnesium and oxygen. The white ash and smoke formed in the reaction is the magnesium oxide.
Hope this helps :)