Metals as Conductors (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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12 cards from this deck
What are delocalised electrons in metals?
What are delocalised electrons in metals?
Electrons not tied to atoms, move freely throughout metal
Why metals conduct electricity
Why metals conduct electricity
Delocalised electrons move, carrying electric charge
Electric current definition
Electric current definition
Flow of electrons
Why metals conduct heat well
Why metals conduct heat well
Delocalised electrons transfer energy quickly when heated
What is metallic bonding?
What is metallic bonding?
Attraction between positive metal ions and delocalised electrons
Structure in metallic bonding
Structure in metallic bonding
Regular pattern of atoms with 'sea of electrons' around ions
What is malleability of metals?
What is malleability of metals?
Layers of atoms slide over each other without breaking bond
What is ductility of metals?
What is ductility of metals?
Metals can be drawn into wires, bonds remain intact
Why copper used in electrical wiring
Why copper used in electrical wiring
High electrical conductivity, relatively inexpensive
Why aluminium used in power lines
Why aluminium used in power lines
Lightweight and good conductor of electricity
Why use gold and silver in electronics?
Why use gold and silver in electronics?
Better conductors than copper, don't corrode
Why metals used in cooking utensils
Why metals used in cooking utensils
Distribute heat quickly and evenly