Covalent compounds - structures and properties - Simple Molecular Covalent (First type) Flashcards
Simple molecular covalent compounds are…
mainly diatomic, e.g. Br2, Cl2, O2 …
The covalent bonds have…
very strong intra molecular bonds.
There are very weak intermolecular forces between…
molecules.
Give 3 examples
(Any non-metal/non-metal substances) Methane, Carbon Dioxide, Water, Ammonia…
Why does - any named simple molecular covalent substance - Carbon Dioxide have a low melting point and boiling point (liquid/gas) at room temperature?
Carbon Dioxide has a small simple molecular structure which has weak forces of attraction between the molecules (weak intermolecular forces) so only a low temperature (energy) is required to overcome these.
Why do simple molecular covalent substances not conduct electricity?
As there are no free (delocalised) electrons or free ions.
