Metals as Conductors (AQA GCSE Chemistry): Flashcards
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14 cards from this deck
Why are metals good conductors?
Why are metals good conductors?
Delocalised electrons move freely, conducting heat and electricity
What are delocalised electrons?
What are delocalised electrons?
Electrons not tied to specific atoms, free to move
How do metals conduct electricity?
How do metals conduct electricity?
Delocalised electrons move carrying electric charge
What is electric current?
What is electric current?
Flow of electrons
How do metals conduct heat?
How do metals conduct heat?
Delocalised electrons transfer energy throughout the metal
What causes delocalised electrons in metals?
What causes delocalised electrons in metals?
Metallic bonding
What is metallic bonding?
What is metallic bonding?
Sea of electrons surrounding positive metal ions
What holds metals together in metallic bonding?
What holds metals together in metallic bonding?
Attraction between positive ions and delocalised electrons
What is malleability?
What is malleability?
Atom layers slide over each other without breaking bonds
What is ductility?
What is ductility?
Ability to be drawn into wires as bonds remain intact
Why is copper used in electrical wiring?
Why is copper used in electrical wiring?
Very high electrical conductivity and relatively inexpensive
Why is aluminium used in power lines?
Why is aluminium used in power lines?
Lightweight and good conductor of electricity
Why are gold and silver used in high-end electronics?
Why are gold and silver used in high-end electronics?
Better conductors than copper and do not corrode
Why are metals used in cooking utensils?
Why are metals used in cooking utensils?
Quickly and evenly distribute heat