M4 Periodic
Table: Chemical Change
Slide 12 of 35
Combination Reaction
So
a reaction between sodium and oxygen can be visualized as follows:
Na + O2 à Na2O
What that
means is that to form one unit of the compound sodium oxide,
two sodium atoms are needed to combine with one atom of oxygen.
–Each formula can be
made to represent one fundamental particle.
–Na represents 1 atoms
of sodium, and O2 represents
1 moleculeof oxygen (which is 2 atoms).
Notice, as
written, the equation shows the loss/destruction of one oxygen
atom and creation of one sodium atom!
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