Question detail
Explain why alloys are generally stronger than pure metals.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Chemical bonds, ionic, covalent and metallic
Question
Explain why alloys are generally stronger than pure metals.
Answer
Alloys are generally stronger than pure metals because they contain different sized atoms that distort the regular layers of metal ions. This distortion makes it harder for the layers to slide over each other, increasing the strength of the material.
Explanation
This answer is strong as it explains the structural differences between alloys and pure metals, linking the concept of atomic size to the mechanical properties of materials. The question tests the student's ability to apply their knowledge of metallic bonding to real-world materials.
Common mistake
Confusing Metallic Bonding
Students often confuse metallic bonding with ionic or covalent bonding, thinking it involves the transfer or sharing of electrons between atoms.
Remember that metallic bonding involves the attraction between positive metal ions and delocalised electrons, which is distinct from the electron transfer in ionic bonding or sharing in covalent bonding.
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