Topic 3 - structures Flashcards
1
Q
Give 5 properties of a giant ionic lattice
A
crystalline high melting point conducts electricity when liquid doesn't conduct when solid soluble in water
2
Q
Give 4 properties of a simple covalent/simple molecular.
A
low melting and boiling points
doesn’t conduct electricity
not soluble in water
soft when solid
3
Q
Give 3 examples of a giant covalent
A
Diamond, graphite and graphene
4
Q
Give 4 properties of a giant metallic structure
A
high melting point
conducts electricity and heat
malleable
ductile
5
Q
What is an alloy?
A
An alloy is a mixture of 2 or more elements, at least one of which is a metal, and the resulting mixture has metallic properties.
6
Q
Give 2 examples of an alloy.
A
steel: iron + carbon
brass: copper + zinc
7
Q
What is purity of gold measured in ?
A
carats
