Essential Chemistry for IGCSE - Metals And Reactivity (Section 6 - No. 16)
Which of the following best explains why alloys are generally stronger than their constituent metals?
The atoms in alloys are smaller.
The different sized atoms disrupt the regular arrangement of the atoms.
Alloys have a higher melting point.
The alloys have better conductivity.
Explanation
The disruption of the regular arrangement due to different-sized atoms makes it harder for layers of atoms to slide over each other, making the alloy stronger.
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