The structure of an alloy is different to the structure of a pure metal.Which one of the following is a correct difference?The atoms in a pure metal are of different sizes, whereas in an alloy they are the same.The atoms in an alloy are from the same element, whereas in a pure metal they are not.The atoms in an alloy are arranged in neat layers (rows), whereas in a pure metal they are not.The atoms in a pure metal are arranged in neat layer (rows), whereas in an alloy they are not.
Question
The structure of an alloy is different to the structure of a pure metal.Which one of the following is a correct difference?The atoms in a pure metal are of different sizes, whereas in an alloy they are the same.The atoms in an alloy are from the same element, whereas in a pure metal they are not.The atoms in an alloy are arranged in neat layers (rows), whereas in a pure metal they are not.The atoms in a pure metal are arranged in neat layer (rows), whereas in an alloy they are not.
Solution
The correct difference is: "The atoms in a pure metal are arranged in neat layers (rows), whereas in an alloy they are not."
Here's why:
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Pure metals have atoms that are all the same size and are arranged in a regular, repeating pattern that forms layers or rows. This structure allows the layers to slide over each other easily, which is why pure metals are generally malleable and ductile.
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Alloys, on the other hand, are made by mixing a pure metal with one or more other elements. The atoms of these other elements can be different sizes to the atoms of the pure metal. This disrupts the regular arrangement of the metal atoms and prevents the layers from sliding over each other easily. This makes alloys harder and stronger than pure metals.
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