Home Up Decomposition Reactions Combination Reactions Single Replacement Reactions Double Displacement Reactions Miscellaneous Reactions Practice Answers (Ex. 11)

 

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Combination Reactions

The second reaction we considered in this lesson  was the combination of magnesium and oxygen to form the compound magnesium oxide which has the formula MgO:

Mg + O2 rtarrow.gif (850 bytes) MgO

Notice that the elements are coming together in a combination reaction.

The reaction of hydrogen and oxygen to form water illustrates that combination reactions are just the opposite of decomposition reactions.

H2 + O2 rtarrow.gif (850 bytes) H2O

It is not necessary that the reactants be elements. It is possible for compounds to combine with one another or with elements in combination reactions.

C6H12 + Br2 rtarrow.gif (850 bytes) C6H12Br2

 

Again, these equations are not balanced and you should take a moment to balance them.

 

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