Balancing Chemical Equations

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After you write out the chemical equation, remember the simple rule: "What goes in, must come out."

In Photosynthesis, the unbalanced equation is:

     CO2 + H2O = C6H12O6 + O2

In Cellular Respiration, the unbalanced equation is:

     C6H12O6 + O2 = CO2 + H2O

In the Fire in a Bottle Experiment, the unbalanced equation is:

     C3H8O + O2 = CO2 + H2O

In the Exploding "Toothpaste" activity, the unbalanced equation is:

     H2O2 = H2O + O2