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What is an alloy?
Mixture of metals / atoms
What happens to metals less reactive than carbon?
Can be extracted from their oxides by reduction with carbon
What can be extracted from their oxides?
Metals less reactive than carbon
What makes iron brittle?
Impurities
What happens if you remove iron’s impurities?
Creates pure iron
What does pure iron have?
Regular arrangement of atoms, layers that slide over each other, soft and easily shaped
What are most irons converted into?
Steels
Why are steels alloys?
They’re a mixture of carbon and iron
What do the different sizes of atoms do?
Distort layers in pure metal structures
What do distorted layers in pure metal structures do?
Make it difficult for them to slide over eachother, making alloys harder
