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Questions and Answers
What is the term used to describe different packing patterns of molecules in crystals?
What is the term used to describe different packing patterns of molecules in crystals?
- Enantiomers
- Stereoisomers
- Polymorphic forms (correct)
- Isomers
How are the two packing arrangements in Fig. 8.1 described in the text?
How are the two packing arrangements in Fig. 8.1 described in the text?
- Enantiomers
- Crystals with the same density
- Polymorphic forms (correct)
- Isomers
Why would the structure in Fig. 8.1a have a lower melting point than the structure in Fig. 8.1b?
Why would the structure in Fig. 8.1a have a lower melting point than the structure in Fig. 8.1b?
- It has more spaced out molecules (correct)
- It has a more interwoven structure
- It has natural break lines
- It is more difficult to physically pull molecules off the structure
What would be the consequence of an attempt to mill the crystal structures in Fig. 8.1a and Fig. 8.1b?
What would be the consequence of an attempt to mill the crystal structures in Fig. 8.1a and Fig. 8.1b?
What term is used to describe crystals with the same mass of material occupying different volumes?
What term is used to describe crystals with the same mass of material occupying different volumes?
What term describes crystals with different packing patterns due to a change in crystallization conditions?
What term describes crystals with different packing patterns due to a change in crystallization conditions?
Why would the crystal structure in Fig. 8.1a have a lower melting point than the structure in Fig. 8.1b?
Why would the crystal structure in Fig. 8.1a have a lower melting point than the structure in Fig. 8.1b?
What might be the consequence of an attempt to mill the crystal structures in Fig. 8.1a and Fig. 8.1b?
What might be the consequence of an attempt to mill the crystal structures in Fig. 8.1a and Fig. 8.1b?
What change in crystallization conditions could lead to molecules forming crystals with a different packing pattern?
What change in crystallization conditions could lead to molecules forming crystals with a different packing pattern?
What term is used to describe crystals with the same mass of material occupying different volumes?
What term is used to describe crystals with the same mass of material occupying different volumes?
Match the following with their descriptions:
Match the following with their descriptions:
