k15 - 11/23/2008 1 Lecture 15: Intermolecular forces Great...

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Unformatted text preview: 11/23/2008 1 Lecture 15: Intermolecular forces Great job on midterm! 85+ A 70-84 B 50-69 C Dont get too excited. Final counts more and is cumulative! Will not have seen questions beforehand beforehand. Must integrate concepts from different parts of course. Layout for next 3 lectures Today: Intermolecular forces and structure, HW on boiling points and hydrogen bonds (chap 8.1,8.2,8.3,8.9) Next Tuesday: Moles, molecular and empirical formulas (chap 1.15-20). Next Thursday: Summary and integration. From single to many lonesome getting things done States of Matter three states of matter: 11/23/2008 2 States of Matter gas liquid solid Special states: plasma Bose Einstein condensate Densities Changes of state Solids melt to form liquids, or liquids freeze to form solids, at the melting point. Liquids evaporate or boil into gases, or gases condense to form liquids, at the boiling point. A few solids at 1 atm sublimate to gas. BPs and MPs are affected by: Molecular weight, intermolecular forces, shape Types of intermolecular forces Depends on...
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k15 - 11/23/2008 1 Lecture 15: Intermolecular forces Great...

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