C5 Work Flashcards
What is the structure of metallic bond
Giant structure as they are solids at room temperatures and therefore have a high temperatures (which require a lot of energy to break the many bonds)
What is a metallic bond
Electrostatic attraction between delocalised outer shell electrons and positive metal ions
Why do metals have a high melting point and boiling point
Because they have many metallic strong bonds that need lots of heat energy to break then
What can we know about a bond if it is solid at room temp
It has a giant structure as it must have a high boiling point (which requires energy)
Why are metals malleable and ductile
Because it has layers than can slide over each other
What does malleable mean
Metal that dan be compressed and not break
What does ductile mean
It can be able to be drawn out into a thin wire
Why are metals good conductors of thermal and electrical energy
They contain delocalised electrons that allow charge heat to flow through the whole structure
What is an alloy
A MIXTURE of a metal element with small amounts of other elements. It has no fixed formula
Why are allpy metals harder than pure metals
Layers are distorted and so can’t slide over each other unlike other metals which are much more lubricant
What ore is bauxite
Alimunium
If something is oxidesed what does it mean
Oxygen is reacted with it
If something has oxidation whats it mean
Oxygen is removed
What is redox
When oxidation and reduction occurs at the same time
