Question detail
What is a characteristic of giant covalent structures?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
How bonding and structure are related to the properties of substances
Question
- A. They are usually gases at room temperature.
- B. They have very high melting points.
- C. They consist of small molecules.
- D. They are made of ionic bonds.
Answer
The correct option is They have very high melting points.. This answer is correct because it matches the approved learning objective to explain why giant covalent structures are solids with very high melting points in the subtopic Giant covalent structures.
Explanation
The correct option is They have very high melting points.. They have very high melting points. is correct because it directly supports the approved learning objective to explain why giant covalent structures are solids with very high melting points. This belongs to the subtopic Giant covalent structures within How bonding and structure are related to the properties of substances, 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 Giant covalent structures.
Common mistake
Misunderstanding melting points
Students often think that giant covalent structures have low melting points because they are made of non-metal atoms.
Emphasize that giant covalent structures are held together by many strong covalent bonds, which require a lot of energy to break, resulting in very high melting points.
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