The last step for balancing a chemical equation is to add the State Symbols

There are 4 types of State Symbols that can be used, namely:

(s) –> represents a Solid (including Precipitates that are insoluble in water)

(l) –> represents a Liquid (including Molten Compounds)

(g) –> represents a Gas (including Water Vapour & Steam)

(aq) –> represents an Aqueous Solution (i.e. substances that are soluble in water)

Example #1:

2Na(s) + Cl2(g) à 2NaCl(aq)

 Example #2:

Mg(s) + H2SO4(aq) à MgSO4(aq) + H2(g)

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