Metallic Bonding Flashcards
What metals consist of
Giant structure
What happens to the electrons in the outer shell
Delocalised : free to move through the whole structure
Why is there strong electrostatic attraction
Between the positive metal ions and the shared negative electrons
what is metallic bonding
Forces of attraction holding together the atoms in a regular structure
Metallic bonding is strong
What kind of substances at held together by metallic bonding
Metallic elements and alloys
Why are most metals sold at room temperature
The electrostatic forces between the metal atoms and the delocalised electrons are strong, need lots of energy to break
High melting and boiling points
Why are metals good conductors of what and electricity
The delocalised electrons carry electrical currents through the whole structure
How are most metals malleable
The layers of atoms in a metal can slide over eachother
Why are alloys harder than pure metals
Pure metals are too soft when they’re pure so are mixed with other metals to make them harder
What are alloys and why are they more useful
Mixture of two or more metals
Harder so useful and
By describing the electronic structure why is an alloy harder than pure metals
Different elements have different sized atoms so when it’s mixed with a pure metal, the new metal will mix the layers of metal atoms making it more difficult for them to slide over eachother which makes it harder
