C2-metals and alloys Flashcards
1
Q
what is metallic bonding?
A
the sharing of delocalised electrons
2
Q
what are properties of metals?
A
- they are electrical conductors because their delocalised electrons carry electrical charge through the metal
- they are good conductors of thermal energy because their delocalised electrons transfer energy
- they have high melting points and boiling points, because the metallic bonding in the giant structure of a metal is very strong - large amounts of energy are needed to overcome the metallic bonds in melting and boiling
3
Q
what is an alloy?
A
a mixture of two or more elements, where at least one element is a metal. Many alloys are mixtures of two or more metals.
