Question detail
How does the structure of alloys differ from pure metals?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Chemical bonds, ionic, covalent and metallic
Question
- A. Alloys have larger atoms only
- B. Alloys contain different sized atoms that distort layers
- C. Alloys have no metallic bonding
- D. Alloys are always less dense than pure metals
Answer
The correct option is Alloys contain different sized atoms that distort layers. This answer is correct because it matches the approved learning objective to state that metallic bonding occurs in metallic elements and alloys in the subtopic Chemical bonds.
Explanation
The correct option is Alloys contain different sized atoms that distort layers. Alloys contain different sized atoms that distort layers is correct because it directly supports the approved learning objective to state that metallic bonding occurs in metallic elements and alloys. This belongs to the subtopic Chemical bonds within Chemical bonds, ionic, covalent and metallic, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Chemical bonds.
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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