ATOMIC BONDING Flashcards
Between what are ionic compounds formed?
no metals and metals
Between what are covalent compounds formed?
non metals and non metals
How are carbon atoms in diamond formed?
A carbon atoms forms covalent bonds to 4 others
What are the diamond properties?
hardest known substance
does not conduct electricity
sparkles when cut
What are graphite properties?
soft and slippery
soft and dark in colour
conducts electricity
Describe properties of ionic compounds
the ions are an ionic lattice and are held together by strong electrostatic forces they are hard they are solids they are brittle they are insulators
Why are ionic compounds insulators?
bc the strong electrostatic forces hold the ions in one place
What happens when an ionic compounds are molten or dissolved in water?
the ions are free to move around so they can conduct electricity
What are properties of covalent molecules?
they are solids they are hard they are malleable or ductile not conduct electricity not dissolve in water
Describe the forces between covalent molecules
they are very weak
How does this affect the rest?
if it is a gas it has low boiling and melting point
not conduct electricity
not dissolve water
what is intermolecular?
weak forces between molecules so it is a gas
What is intramolecular?
strong forces between covalent molecules
What are key points of metallic bonding?
in metallic bonds atoms lose their outer electrons
the lattice of metal ions are in a sea of shared electrons
the electrostatic force between metal ions and delocalised electrons are strong
What are properties of metals?
metals are solids
metals are malleable and ductile
metals conduct electricity and heat
