Molecular substances usually exist as small molecules like C02 and H20
The atoms within the molecules are held together by VERY STRONG COVALENT BONDS
However, the FORCES OF ATTRACTION between these molecules are VERY WEAK
Only a tiny bit of energy is needed to overcome the weak forces between the molecules - MOLECULAR SUBSTANCES HAVE LOW MELTING//BOLING POINTS
This means they're usually gases and liquids at room temperature
Pure molecular substances don't conduct electricity because the molecules arent charged - no free electrons or ions
Most non-metals and most compounds formed from non-metals are molecular
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