What is a word equation?
A word equation is a simple way of representing a reaction using the names of the chemicals.
In a word equation reactants are transformed into products according to the following general equation
Reactants → Products
In a chemical reaction mass is always conserved. This is known as the "Law of Conservation of mass."
The following reaction cannot occur as mass is not conserved.
Sodium iodide + chlorine → Iodine
Where did the sodium and the chlorine go? They must be included in the equation! Matter cannot just disappear or appear from no where.
The correct equation is
Sodium iodide + chlorine →Iodine + sodium chloride
Is this reaction matter is conserved. The elements that react break apart recombine to produce new substances.
Examples of other word equations include