Metallic, ionic, simple molecular and giant covalent bonding Flashcards
what is the structure in metallic bonding?
giant lattice
(of positive metal ions* and a sea of delocalised electrons)
*positive metal ions = metal cations
what is the structure in ionic bonding?
giant lattice
(of metal and non-metal (ions))
what is the structure in simple MOLECULAR bonding?
(covalent)
molecules
(non-metals)
what is the structure like in GIANT covalent bonding?
(Diamond, graphite and silicone dioxide (sand))
giant lattice
(of non-metals)
electrostatic attraction / covalent bond between…
bond type and definition of metallic bonding?
electrostatic forces of attraction between rows of metal cations and a sea of delocalised electrons
what is the bond type in metallic bonding?
electrostatic attraction
electrostatic attraction / covalent bond between…
bond type and definition of ionic bonding?
electrostatic attraction between positive and negative ions
(between cations and anions)
what is the bond type in ionic bonding?
electrostatic attraction
electrostatic attraction / covalent bond between…
bond type and definition of simple MOLECULAR bonding?
covalent bond between ATOMS.
Weak intemolecular forces between molecules.
what is the bond type in simple MOLECULAR bonding?
covalent bond
electrostatic attraction / covalent bonds between…
bond type and definition of GIANT covalent bonding?
electrostatic attraction between the bonding pair of electrons and bonded nuclei
what is the bond type in GIANT covalent bonding?
electrostatic attraction
melting point & why: metallic bonding
HIGH - strong metallic bonds require a lot of energy to break
melting point & why: ionic bonding
HIGH - strong ionic bonds require a lot of energy to break
melting point & why: simple MOLECULAR bonding
LOW - weak intermolecular forces require little energy to break
melting point & why: GIANT covalent bonding
VERY HIGH - strong covalent bonds require a lot of energy to break
conductivity: when and why - metallic
as a solid & liquid:
DELOCALISED e- can flow (through the material and carry a charge)
conductivity: when and why - ionic
when molten & in solution:
IONS can move
conductivity: when and why - simple MOLECULAR
do not conduct:
no free moving charged particles
conductivity: when and why - GIANT covalent
(any exceptions…?)
do not conduct:
no free moving charged particles
(GRAPHITE does - delocalised e- can flow)
