Bonding, Structure And Properties Flashcards
What are the three kinds of bonding and what atoms do they occur between?
Ionic - metal/non metal
Covalent - non metal only
Metallic - metal only
How can an ionic lattice structure be described?
A lattice structure of Oppositely charged ions held together by strong electrostatic forces of attraction
How can simple molecular structure be described?
Molecules with strong covalent bonds between atoms but weak intermolecular forced
What are examples of giant covalent structures? And which are allotropes of carbon?
Sand (A O C) Diamond Graphite Graphene
In which allotrope of carbon does each carbon atom form 4 bonds?
Diamond
Which two allotropes of carbon are electrical conductors?
Graphite and graphene
Which allotrope of carbon has the formula C60?
Buckminsterfullerene
Bucky balls
What uses do nanoparticles of silver have?
Can kill bacteria
Used in clothes, wound dressings and deodorant to prevent odour
What uses do nanoparticles of titanium dioxide have?
Sunblock
Self cleaning windows
What are the risks associated with nanoparticles?
Silver - can be absorbed into brain and cause death of cells and tissues
Titanium dioxide - lung toxicity, skin/eye irritation, damage to genetic material