Giant metallic structures and alloys (AQA GCSE Chemistry Combined Science): Flashcards
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Practise the cards
13 cards from this deck
What are giant metallic structures?
What are giant metallic structures?
Metal ions arranged in regular patterns
What holds metallic structures together
What holds metallic structures together
Strong metallic bonds
What are delocalised electrons?
What are delocalised electrons?
Electrons free to move around the whole structure
Why metals have high melting points
Why metals have high melting points
Metallic bonds are very strong
Which metal is liquid at room temperature?
Which metal is liquid at room temperature?
Mercury
Why metals conduct electricity
Why metals conduct electricity
Delocalised electrons can move freely
Why metals conduct heat
Why metals conduct heat
Delocalised electrons gain energy and carry heat
What is an alloy
What is an alloy
Mixture of metals or metal mixed with other elements
How do alloys compare to pure metals?
How do alloys compare to pure metals?
Harder, stronger, more useful
Why are alloys harder than pure metals?
Why are alloys harder than pure metals?
Different sized ions stop layers sliding easily
Why pure metals bend easily
Why pure metals bend easily
Same size ions, layers slide over each other easily
What is brass?
What is brass?
Copper and zinc alloy
What is steel
What is steel
Iron mixed with carbon