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What is an alloy and what are some of its features?
Mixture of a metal with other elements
Alloys can be harder and stronger than pure metals, and be more resistant to corrosion and extreme temperatures
These features make them more useful than pure metals
What are the types of alloys?
Brass: alloy made of copper and zinc
Stainless steel: alloy made of iron and other elements like chromium, nickel and carbo
Explain the structure of alloys and how it makes them stronger than metals
Alloys have an irregular arrangement of atoms
They typically contain atoms of different sizes, which distorts the regular arrangement metals usually have
Regular arrangement: positive ions in a sea of delocalised electrons
The distortion alloys have make it more difficult for the metal layers to slide over each other
This make alloys stronger than metals

What are alloys used for?
Alloys can be used to make a variety of tools due to their hardness and resistance to corrosion/rusting
Stainless steel is used to make cutlery since it is resistant to rusting and its hardness