Structure And Bonding Flashcards
Factors effected by electrostatic force
Melting point
Boiling point
Relativity
Solubility
Electrostatic force
The attraction between a negatively and positively charge ion
Ionic compounds (lattices)
Lattice is a regular array of particles and these are positive and negative on ionic compounds
Factors effecting electrostatic force
Higher the charge of the electron
High the ES force
Physical properties of ionic compounds
High melting points
Low reactivity
Usually soluble in water
Can conduct electricity when dissolved melted because electrons are free to move
Atomic number
Number of protons/electrons
Atomic mass
Number of protons + neutrons
Giant covalent structures
Diamond and graphite
Diamond properties and uses
Very hard High melting point Strong covalent bonds Doesn't conduct electricity Doesn't dissolve
Diamond structure
Tetrahedral
electrons aren’t free to move
Strongly bonded covalently
Pure carbon
Graphite uses and properties
Soft and slippery Lubricant High melting and boiling point Doesn't dissolve Less dense than diamond Conducts electricity
Graphite structure
Attractions between layers weak but between atoms strong
4th electron in every outer layer is free
Simple molecular structure properties and structure
Weak intermolecular forces Weak Insoluble in water Soluble in organic solvent Don't conduct electricity
Allotrope
Substance made from same atom however it’s different to other because of structure differences
Metallic bonding
Given outer electron into sea of delocalised electrons so they conduct electricity very well
Don’t dissolve in water and high melting point
