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Separating Two Solids Without Breaking Bonds 4 questions
Separating Two Solids Without Breaking Bonds
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A display compares a molecular solid and a covalent network solid. They have the same overall X-to-Y atom ratio of 1:2. The first setting disrupts attractions between separate molecules while leaving every X–Y bond intact. The second setting can break X–Y bonds.
| Sample | Observed after the first setting |
|---|---|
| P | Six separate particles, each with one X bonded to two Y |
| Q | One connected piece with six X and 12 Y atoms |
Question 1
Which observation supports a molecular structure for the original sample?
- P separates into intact XY₂ units.
- Q has 12 Y atoms.
- Both samples have a 1:2 ratio.
- Both samples contain X atoms.
Question 2
Find the total atom count in P after separation. Compare it with the atom count in Q’s connected piece.
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Question 3
Identify the network solid. Use the observation from the first setting to explain your identification.
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A third setting restores attractions between separate molecules but cannot form any X–Y bonds. A technician tests this setting on the separate units recovered from P in the first setting. The technician also tests it on pieces cut from Q by breaking X–Y bonds in the second setting.
Question 4
Which sample can the third setting restore to its original type of solid? Explain using the changes to the bonds or attractions in both samples.
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