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CHEM1903 - Resources for Week 8

Topics and Learning Outcomes

  • Liquid Crystals
    •  describe lyotropic, nematic and smectic A & C thermotropic liquid crystals
    •  describe cubic, hexagonal and lamellar lyotropic liquid crystals
    •  relate intermolecular forces to boiling points and surface tension
  • Liquids
    •  calculate concentrations in molarity, molality, mole fraction, % w/w and %v/v and perform dilutions
    •  calculate expected freezing point depressions of solutions
    •  calculate expected solution osmotic pressures
    •  explain the origin of osmotic pressure and how it can be measured
  • The Greenhouse Effect
    •  summarise the evidence for global warming and the greenhouse effect
    •  calculate the temperature of a black body emitter from its wavelength maximum or from an energy balance and suitable data
    •  Identify the infrared wavelength range
    •  convert between units of wavelength, wavenumber, frequency and energy
    •  describe how infrared energy is absorbed by exciting vibrational modes, and the selection rule for an infrared absorbance
  • 1st Law of Thermodynamics
    •  define the types of thermodynamic system
    •  recognise electrical, PV, surface, and elastic (spring) work
    •  express and explain the First Law of Thermodynamics, and use it to carry out energy balances
    •  define heat capacity and manipulate First Law heat capacity expressions
    •  define the terms exothermic and endothermic
    •  explain how a calorimeter and a chemical thermostat work

Textbook and eBook References

  • Material Properties (Polymers, Liquid Crystals, Metals, Ceramics) - Sections 7.6 - 7.8
  • Liquid Crystals - Section 7.6
  • Thermochemistry - Sections 8.1 and 8.3
  • Polymers and the Macromolecular Consequences of Intermolecular Forces - Sections 24.3 - 24.5 and 26.1
the eBook references are free and are taken from high quality sources.

Lecture Notes, Tutorial Worksheets & Answers and Suggested Exam Questions

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ChemCAL and iChem Resources

Contributed Links and Resources

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Material Properties (Polymers, Liquid Crystals, Metals, Ceramics) -  
Tags: allotropes  |  Contributed by Chiara Neto
Liquid Crystals -  
Thermochemistry -  
  BBC Podcast on Global Warming  
Description: New findings show that local warming in antarctic triggered CO2 release which caused catastrophic global warming in Eocene.
Contributed by TWS
  Heat, temperature and heat capacity (short video tutorial)  
Description: The difference between heat and temperature and how to relate them using heat capacity.
Tags: heat capacity | heat  |  Contributed by Adam Bridgeman
  Mythbusters Thermite Explosion  
Description: Mythbusters show that steam explosion can be caused by rapid heating by thermite reaction. Hess''s Law Fail at 6:40
Contributed by TWS
Nitrogen in the Atmosphere -  
Polymers and the Macromolecular Consequences of Intermolecular Forces -  

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