Non-metals react together = covalent bonding
Simple molecules formed when non-metals can't give away electrons in a reaction, so they share instead; held together by these sharing electrons (very strong)
Sometimes only the same amount of electrons are needed, but otherwise more atoms are involved in the reaction.
Covalent bonding represented like "Venn Diagrams"
Giant covalent structures have large numbers of atoms held together by networks of covalent bonds ( see Giant Covalent Substances)
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