Covalent Substances: Two kinds Flashcards
Substances with covalent bonds can be either, what 2 things?
Simple molecules.
Giant structures.
Simple molecular substance atoms form what?
Very strong covalent bonds to form small molecules of several atoms.
Simple molecular substance have what kind of forces of attraction between molecules?
Very weak.
Result of the feeble intermolecular forces is what?
Melting and boiling points are low.
Why are intermolecular forces melting and boiling points low?
Molecules are easily parted from each other.
What gets broken when simple molecular substances melt or boil?
Intermolecular forces.
Most molecular substances are what at room temp?
Gases or liquids.
Can be solids.
Molecular substances don’t what?
Conduct electricity.
Why don’t molecular substances conduct electricity?
No ions so no electrical charge.
Giant covalent structures are what?
Macromolecules.
In giant covalent structures there’s no…
Charged ions’
In giant covalent structures all the atoms are what?
Bonded to each other by strong covalent bonds.
If atoms are are bonded together by strong covalent bonds what does it mean?
Very high melting/boiling points.
Giant covalent structures don’t what…
Conduct electricity.
