LEC 04 CHAP 12 - Chapter 12 Why study liquids and solids?...

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TOUPADAKIS Ch 12 Lecture 4 Chapter 12 Why is carbon dioxide normally a gas, whereas water is normally a liquid? Why do any liquids form anyway? Why do liquids freeze to solids as the temperature is lowered? Why ice floats in water but solid benzene sinks in liquid benzene? Why study liquids and solids? In order to answer questions like:
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TOUPADAKIS Ch 12 Lecture 4 Lecture 4 Attractive forces versus thermal motion. Strength of Attractive forces. Intermolecular versus Intramolecular Forces. Types of Intermolecular Attractive forces. Surface Tension and Viscosity of Liquids. Vaporization of Liquids. Boiling of Liquids. Critical Temperature, T c and Critical Pressure, P c. "Permanent" and "Nonpermanent" gases.
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TOUPADAKIS Ch 12 Lecture 4 Liquids and Solids What factors decide the physical state of a substance? Attractive Forces between the components of the substance (atoms, ions, or molecules). Thermal Motion of the components of the substance. Consider water at certain temperature and pressure. How does temperature relate to thermal motion? Thermal motion to attractive forces? Pressure to attractive forces? Consider water and table salt at the same temperature of 25 o C and pressure of 1 atm. Why one substance is a liquid and the other is a solid? Questions to think about:
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TOUPADAKIS Ch 12 Lecture 4 Strength of Attractive forces Molecules (polarity, size, shape) Atoms (size) Ions (charge density) The strength of the attractive forces depends on the nature of the system components.
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TOUPADAKIS Ch 12 Lecture 4 The attraction (or repulsion) between molecules is an intermolecular
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This note was uploaded on 04/18/2010 for the course CHEM 2B 993029 taught by Professor Toupadakis during the Spring '10 term at UC Davis.

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LEC 04 CHAP 12 - Chapter 12 Why study liquids and solids?...

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