Metallic bonding (AQA GCSE Chemistry): Flashcards
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12 cards from this deck
Where does metallic bonding occur?
Where does metallic bonding occur?
In metal elements and alloys
What does delocalised mean in metallic bonding?
What does delocalised mean in metallic bonding?
Electrons no longer attached to individual atoms
What's left when electrons become delocalised?
What's left when electrons become delocalised?
Positive metal ions
What structure is formed by metal ions?
What structure is formed by metal ions?
A regular lattice
What creates the metallic bond?
What creates the metallic bond?
Electrostatic attraction between positive ions & delocalised electrons
Why do metals conduct electricity?
Why do metals conduct electricity?
Delocalised electrons can move freely
Why are metals malleable?
Why are metals malleable?
Structure can bend as electrons can move around
Why do metals have metallic lustre (shiny)?
Why do metals have metallic lustre (shiny)?
Free electrons reflect light
What are alloys?
What are alloys?
Mixtures of metals
Why are alloys harder than pure metals?
Why are alloys harder than pure metals?
Different sized atoms disrupt lattice, layers can't slide
What is steel an alloy of?
What is steel an alloy of?
Iron and carbon
Why is copper used for electrical wires?
Why is copper used for electrical wires?
Conducts electricity very well