Structures - Unit 1 Topic 4 Flashcards
Draw a diagram of a giant ionic lattice
Give an example of a giant ionic lattice.
Sodium Chloride
Magnesium Oxide
Properties of a giant ionic lattice.
Crystalline
High melting point
Conducts electricity when molten
Soluble in water
What are the forces in a simple covalent/covalent molecular?
Van der Waals’
Describe Van der Waals’ forces?
Weak forces between molecules
Strong covalent bonds between atoms
Properties of a simple covalent/covalent molecular?
Van der Waals’ forces
Low melting & boiling points
Doesn’t conduct
Insoluble in water
Soft when solid
Gives 2 examples of giant covalent structure
Diamond
Graphite
Properties of diamond?
High melting point
Doesn’t conduct
Insoluble in water
Very hard
Properties of graphite?
High melting point
Conductor
Insoluble in water
Slippery & soft
Draw diamonds structure
Draw graphites structure
Properties of a giant metallic
Conductor
High melting point
Malleable & ductile
Dense & strong
Conducts heat
Draw a giant metallic structure?
What is an alloy?
2 or more elements bonded. 1 being a metal, giving the substance metallic properties.
