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Gas, Liquid or Solid? UNIT 3 Day 11 What are we going to learn - - PowerPoint PPT Presentation
Gas, Liquid or Solid? UNIT 3 Day 11 What are we going to learn - - PowerPoint PPT Presentation
Vanden Bout/LaBrake/Crawford CH301 WHY IS EVERYTHING SO DIFFERENT? Gas, Liquid or Solid? UNIT 3 Day 11 What are we going to learn today? Properties of Solids Different Types Physical Properties Properties of Liquids based on
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Properties of Liquids based on intermolecular forces and shapes of molecules Properties of Solids based on intermolecular forces and the type of bonding
Physical Properties
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Diamonds are a) A bunch of C atoms held together by dispersion forces b) A bunch of C molecules held together by dipole dipole interactions c) A bunch of C atoms covalently bound together d) A bunch of C molecules held together by dispersion forces
iclicker polling question
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Graphite is a) A bunch of C atoms held together by dispersion forces b) A bunch of C molecules held together by dipole dipole interactions c) A bunch of C atoms covalently bound together d) A bunch of C molecules held together by dispersion forces
iclicker polling question
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Solids are classified into four different categories Ionic Covalent Metallic Molecular We’ve already discussed two types of solids this semester. Which ones have we discussed?
- A. Ionic and Covalent
- B. Metallic and Covalent
- C. Molecular and Ionic
- D. Metallic and Molecular
iclicker polling question
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Ionic Covalent or (Network) Molecular Metallic
Types of Solids
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Types of Solids
Class Examples Characteristics Ionic NaCl, KNO3, CuSO4•H2O Hard, rigid, brittle; high melting/boiling points; those soluble in water give conducting solutions Network B, C, black P, BN, SiO2 Hard, rigid, brittle; very high melting points; insoluble in water Metallic s- and d- elements Malleable, ductile, lustrous; electrically and thermally conducting Molecular BeCl2, S8, P4, I2, ice, glucose Relatively low melting/boiling points; brittle if pure
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Physical Properties of Solids
Class Electrons Conductivity Ionic Localized Not a good conductor (only conducts electricity in aqueous solutions) Network Localized Not a good conductor Metallic Delocalized Good conductor Molecular Localized Not a good conductor
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Physical Properties of Solids
Ionic Metallic
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Physical Properties of Solids
Molecular Network
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