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Properties of Liquids Groups of liquid molecules are held together only by intermolecular forces. [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib.

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Presentation on theme: "Properties of Liquids Groups of liquid molecules are held together only by intermolecular forces. [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib."— Presentation transcript:

1 Properties of Liquids Groups of liquid molecules are held together only by intermolecular forces. [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib /media_portfolio/text_images/CH11/FG11_02.JPG]

2 Properties of Liquids Surface Tension Intermolecular forces at the surface are imbalanced. [http://www.ap.stmarys.ca/~smitchel/for201labs/blood_angle/surface_tension.jpg]

3 [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib /media_portfolio/text_images/CH11/FG11_27.JPG] [http://learn.sdstate.edu/Deb_Pravecek/Chem106L/im ages/meniscus.JPG]

4 [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_portfolio/text_images/CH11/FG11_28.JPG]

5 [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_portfolio/text_images/CH11/FG11_29.JPG]

6 Properties of Liquids Viscosity “Friction” between molecules that causes them to resist motion. More forces = higher viscosity [http://cwx.prenhall.com/bookbind/pubbooks/hillchem3/medialib/media_ portfolio/text_images/CH11/FG11_31.JPG ]

7 [http://www.talkintrucks.com/images/Oil%20bottle%20variety.gif]

8 [http://www.aa1car.com/library/API_donut.gif]

9 [http://www.aa1car.com/library/oil_chart.jpg]

10 [http://www.carbibles.com/images/sludge1.jpg]

11 Types of Solids Crystalline Solids Particles exist in a highly ordered repeating pattern. Most solids fall into this category. [http://liftoff.msfc.nasa.gov/academy/materials/topaz.gi]f

12 [http://www.chem.neu.edu/Courses/1105Tom/05Lecture21_files/image004.jpg] Unit Cells – Smallest part of the repeating pattern of a crystalline solid

13 Cubic

14 Orthorhombic

15 Monoclinic Triclinic

16 Hexagonal

17 Types of Solids Amorphous Solids Particles trapped in a disordered arrangement. “Supercooled Liquids” Substances such as glass, rubber, & plastics [http://www.springfieldart.net/galleries/glass/2035.jpg]

18 [http://www.auburn.edu/~leeming/quartz.jpg] [http://www.ndted.org/EducationResources/CommunityCollege/Mat erials/Graphics/QuartzGlass.jpg] Crystalline vs. Amorphous

19 Bonding in Solids Molecular Solids Held together by only intermolecular forces. Mostly compounds made of non-metals! Soft solids with low melting points. Examples: H 2 O (ice), wax, sugar

20 Bonding in Solids Metallic Solids Positive metal nuclei are surrounded by mobile valence electrons. Excellent conductors, but variable hardness and melting points Examples: Any metallic element or alloy [http://wps.prenhall.com/wps/media/objects/476/488316/Instructor_ Resources/Chapter_12/FG12_29.JPG]

21 Bonding in Solids Ionic Solids Positive and negative ions attract one another. (Metal & Non-Metal) Exist as pure crystalline shapes Brittle solids with high melting points. Examples: Any ionic “salts” such as NaCl, KBr, etc… [http://www.auburn.edu/~leeming/pyrite.jpg]

22 [http://www.auburn.edu/~leeming/fluorite.jpg]

23 Bonding In Solids Covalent-Network Solids Covalent bonds form a network throughout the entire substance. (mostly non-metals) Very hard solids with very high melting points. Examples: Carbon (diamond form only), Pure Silicon [http://www.diamond-experts.com/images/kohinura.jpg]

24 All Carbon: Diamond vs. Graphite [http://itl.chem.ufl.edu/2041_f97/matter/FG11_042.GIF]

25 [http://wps.prenhall.com/wps/media/objects/602/616516/Media_Assets/Chapter10/Text_Images/FG10_TB09.JPG]


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