Metals as Conductors (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
14 cards from this deck
Why metals conduct heat & electricity well
Why metals conduct heat & electricity well
Delocalised electrons move freely throughout metal structure
Delocalised electrons definition
Delocalised electrons definition
Electrons not tied to specific atom, move freely in metal
How delocalised electrons enable electrical conductivity
How delocalised electrons enable electrical conductivity
Move in specific direction carrying electric charge through metal
Electric current in metals
Electric current in metals
Flow of delocalised electrons through the metal
How metals conduct heat (thermal conductivity)
How metals conduct heat (thermal conductivity)
Delocalised electrons gain energy, move faster, transfer energy quickly
Cause of delocalised electrons in metals
Cause of delocalised electrons in metals
Metallic bonding
Metallic bonding structure
Metallic bonding structure
Sea of electrons surrounds positive metal ions in regular pattern
Force holding metal structure together
Force holding metal structure together
Attraction between positive ions & delocalised electrons
Malleability in metals
Malleability in metals
Layers of atoms slide over each other without breaking bonds
Ductility in metals
Ductility in metals
Metals can be drawn into wires, bonds remain intact
Copper as electrical conductor
Copper as electrical conductor
Very high conductivity, used in wiring, relatively inexpensive
Aluminium conductor properties & uses
Aluminium conductor properties & uses
Lightweight, good conductor, used in power lines & cables
Gold & silver as conductors
Gold & silver as conductors
Better conductors than copper, don't corrode, used in high-end electronics
Why metals used in cooking utensils
Why metals used in cooking utensils
Quickly & evenly distribute heat, ideal for cooking