Giant metallic structures and alloys (AQA GCSE Chemistry): Flashcards
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12 cards from this deck
Giant metallic structures
Giant metallic structures
Metal atoms arranged in layers held together by metallic bonding
Metallic bonding
Metallic bonding
Strong bonds formed by delocalised electrons holding metal ions together
Delocalised electrons in metals
Delocalised electrons in metals
Loose electrons that move freely around metal structure
Sea of electrons
Sea of electrons
Delocalised electrons holding metal ions together
Why metals have high melting points
Why metals have high melting points
Strong metallic bonds need lots of energy to break
Why metals conduct electricity
Why metals conduct electricity
Delocalised electrons are free to move and carry current
Why metals conduct heat
Why metals conduct heat
Delocalised electrons move faster when heated and transfer energy
Pure metals composition
Pure metals composition
Contain only one type of metal atom in regular layers
Why pure metals bend easily
Why pure metals bend easily
Layers of atoms can slide over each other when force is applied
Alloy definition
Alloy definition
Mixture of two or more metals
Example of an alloy
Example of an alloy
Brass (copper mixed with zinc)
Why alloys are harder than pure metals
Why alloys are harder than pure metals
Different-sized atoms disrupt layers, preventing them from sliding