Bonding and Structure Flashcards
(12 cards)
What kind of bonding occurs between metals?
Metallic bonding
What kind of bonding occurs between metals and non-metals?
Ionic bonding
What kind of bonding occurs between non-metals?
Covalent bonding
How does metallic bonding work?
The outer shell electrons are free to move freely. The metal is held together by the attraction between the negative electrons and positive atoms
Link the following properties to metallic bonding features:
Strong/high bp/mp
Good conductors
Malleability
Malleable/ductile
Strong - strong attraction between mobile electrons and the atoms
Conductors - free moving electrons
Malleable- layers of ions allow for sliding over each other
Link the following properties to the features of ionic bonding:
Conductor
Solubility
High bp/mp
Conductor - Melting and dissolving releases lattice
Solubility- lattice structure breaks down
High bp/mp - lots of energy needed to separate +ve and -ve ions
Link the following properties to the features of covalent bonding:
Low mp/bp
Non-electrolyte
Insoluble
Mp/bp - weak forces of attraction between individual molecules
Non-electrolyte - no ions present
Insolubility - no ions present
Name three types of giant covalent structure?
Diamond
Graphite
Carbon nanotube
List three uses and three properties of diamond?
Uses - drill bits, jewellery, engraving tools
Properties - high mp/bp, hard/strong, dense
Name three properties and three uses of carbon nanotubes
Uses - car panels, flat panel displays, electronic circuits
Properties - electrical conductor, incredibly strong
Name three uses and properties of graphite?
Uses - brake shoes, pencils, lubricants
Properties - soft and greasy, good electrical conductor, high mp
What are the differences between simple and giant covalent structures
Bonds in simple structures are much weaker so simple structures have low boiling and melting points and are soluble unlike giant structures
