Bonding and Structure Flashcards
ionic bonding is the
electrostatic force of attraction between a positive ion and negative ions
what is an ion
an atom that has lost or gained electrons
Ionic substances generally have a high
melting and boiling point
Ionic substances are shaped in
a lattice
Ionic substances are generally
soluble in water
Ionic substances can conduct electricity when
molten or in solution
why can ionic substance conduct when molten
ions are free to move
ionic bonds are generally between
metal ions and non-metal ions
give an example of an ionic bond
sodium chloride (salt)
what is a covalent bond
the mutal attraction between two nuclei for a shared pair of electrons
a covalent bond generally forms between
two non metals
the two types of stuctures that a covalent bond can form
molecular
network
give an example of a covalent molecular
water
give an example of covalent network
graphite
covalent molecular boiling and melting point
low
covalent network boiling and melting point
high
generally covalent networks cannot
conduct electricity
covalent moleculars cannot
conduct electricty
covalent substances are generally
insoluble
diatomic molecules
contain 2 atoms
diatomic substances generally form
covalent molecular
the diatomic elements are
- Hydrogen
- Iodine
- Nitrogen
- Chlorine
- Bromine
- Oxygen
- Fluorine
metallic bonding is the
force of attraction between positive ions and delocalised elecctrons
metallic substances are
insoluble
metallic substances have
high melting and boiling point
metallic substances can
conduct electricity
