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Questions 1. Give two qualitative observations for each sample upon closer examination of the respective photos. 2. Sample Four was the only sample that contained an odour. What does this suggest about the ease with which the particles can leave the solid with respect to the strength of the intermolecular forces of attraction between the particles? ( 3. Which sample has mobine electrons for which to conduct electricity? 4. Sample Four was the only one that was soluble in a nonpolar solvent. What does this suggest about the polarity of the molecule in Sample Four? 5. Sample One was soluble in water and in its molten state conducted electricity, but in its solid state it did not conduct electricity. Electrons only flow in solids to produce current electricity. What types of particles does the experimental evidence point to the makeup of this sample? (T 6. What evidence is there to support the formation of ionic or molecular liquids of nonpolar crystals? 7. What could you deduce about the strength of the forces of attraction between the particles, in Sample 3, compared to the other samples? (1 mark) 8. Give 3 more physical tests to help you in your analysis of these samples and their subsequent identification.

Questions 1. Give two qualitative observations for each sample upon closer examination of the respective photos. 2. Sample Four was the only sample that contained an odour. What does this suggest about the ease with which the particles can leave the solid with respect to the strength of the intermolecular forces of attraction between the particles? ( 3. Which sample has mobine electrons for which to conduct electricity? 4. Sample Four was the only one that was soluble in a nonpolar solvent. What does this suggest about the polarity of the molecule in Sample Four? 5. Sample One was soluble in water and in its molten state conducted electricity, but in its solid state it did not conduct electricity. Electrons only flow in solids to produce current electricity. What types of particles does the experimental evidence point to the makeup of this sample? (T 6. What evidence is there to support the formation of ionic or molecular liquids of nonpolar crystals? 7. What could you deduce about the strength of the forces of attraction between the particles, in Sample 3, compared to the other samples? (1 mark) 8. Give 3 more physical tests to help you in your analysis of these samples and their subsequent identification.

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter10: Liquids And Solids
Section: Chapter Questions
Problem 63E: Elemental carbon has one gas phase, one liquid phase, and two different solid phases, as shown in...
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Questions 1. Give two qualitative observations for each sample upon closer examination of the respective photos. 2. Sample Four was the only sample that contained an odour. What does this suggest about the ease with which the particles can leave the solid with respect to the strength of the intermolecular forces of attraction between the particles? ( 3. Which sample has mobie electrons for which to conduct electricity? 4. Sample Four was the only one that was soluble in a nonpolar solvent. What does this suggest about the polarity of the molecule in Sample Four? 5. Sample One was soluble in water and in its molten state conducted electricity, but in its solid state it did not conduct electricity. Electrons only flow in solids to produce current electricity. What types of particles does the experimental evidence point to the makeup of this sample? (. 6. What evidence is there to support the formation of ionic or molecular liquids of nonpolar crystals? 7. What could you deduce about the strength of the forces of attraction between the particles, in Sample 3, compared to the other samples? (1 mark) 8. Give 3 more physical tests to help you in your analysis of these samples and their subsequent identification.
Transcribed Image Text:Questions 1. Give two qualitative observations for each sample upon closer examination of the respective photos. 2. Sample Four was the only sample that contained an odour. What does this suggest about the ease with which the particles can leave the solid with respect to the strength of the intermolecular forces of attraction between the particles? ( 3. Which sample has mobie electrons for which to conduct electricity? 4. Sample Four was the only one that was soluble in a nonpolar solvent. What does this suggest about the polarity of the molecule in Sample Four? 5. Sample One was soluble in water and in its molten state conducted electricity, but in its solid state it did not conduct electricity. Electrons only flow in solids to produce current electricity. What types of particles does the experimental evidence point to the makeup of this sample? (. 6. What evidence is there to support the formation of ionic or molecular liquids of nonpolar crystals? 7. What could you deduce about the strength of the forces of attraction between the particles, in Sample 3, compared to the other samples? (1 mark) 8. Give 3 more physical tests to help you in your analysis of these samples and their subsequent identification.
You are a chemist working in a laboratory where unknown samples are given to you to test and identify. Your first assignment is to identify five unknown samples and state their respective type of crystalline solid. The experimental results are for you to examine and make your final conclusions. Samples: Sample 1 Sample 2 Sample 3 Sample 4 Part A- Chemical Analyses In addition to the visual observations you can make from the photos of the samples, the following results are from analyses of the samples: Sample One Odour- Odourless Solubility in water- soluble Solubility in hexane- insoluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- conducts Sample Two Odour- Odourless Solubility in water- insoluble Solubility in hexane- insoluble Electrical conductivity of solid- conducts electricity Electrical conductivity in molten state- conducts Sample Three Odour- Odourless Solubility in water- insoluble Solubility in hexane- insoluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- melting point is too high. No results. Sample Four Odour- sharp aromatic odour Solubility in water- insoluble Solubility in hexane- soluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- no conduction
Transcribed Image Text:You are a chemist working in a laboratory where unknown samples are given to you to test and identify. Your first assignment is to identify five unknown samples and state their respective type of crystalline solid. The experimental results are for you to examine and make your final conclusions. Samples: Sample 1 Sample 2 Sample 3 Sample 4 Part A- Chemical Analyses In addition to the visual observations you can make from the photos of the samples, the following results are from analyses of the samples: Sample One Odour- Odourless Solubility in water- soluble Solubility in hexane- insoluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- conducts Sample Two Odour- Odourless Solubility in water- insoluble Solubility in hexane- insoluble Electrical conductivity of solid- conducts electricity Electrical conductivity in molten state- conducts Sample Three Odour- Odourless Solubility in water- insoluble Solubility in hexane- insoluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- melting point is too high. No results. Sample Four Odour- sharp aromatic odour Solubility in water- insoluble Solubility in hexane- soluble Electrical conductivity of solid- no conduction Electrical conductivity in molten state- no conduction
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