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Table of Contents Atomic Symbols
Checkpoint 1
Chemical Formula
Covalent 1
Covalent 2
Ionic 1
Ionic 2
Checkpoint 2
Summary



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Learning Zone - Chemical Symbols and Formula

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So far you only learn how to write chemical formula for ONE molecule. How do you describe two molecules? For instance, the chemical formula for two sodium hydroxide molecules is written as

two sodium hydrogen formula

This means there are two sodium, two oxygen and two hydrogen. This is NOT two sodium, one oxygen and one hydrogen atom.

Below shows the summary of the chemical notation, using aluminium sulfate as an example (this example indicate two aluminium sulfate).

summary of chemical symbol notation



End of lesson

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