logging in or signing up Australian Education System assignmenthelpn Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 90 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 30, 2012 This Presentation is Public Favorites: 0 Presentation Description Assignmenthelp.net provides email based Australia homework help and Australia assignment help. Australia best number 1 website that provides homework help and assignment help in most of the subject. Whether your problem is simple or complex, we have 24/7 Australian live online tutors available to help you with your questions. Get speedy and cost effective homework solutions at assignmenthelp.net for any kind of homework and assignment help from Australian tutor and professionals only. assignmenthelp.net/Australia-assignment-help.php Comments Posting comment... Premium member Presentation Transcript Chemistry Homework Help: Chemistry Homework Help An Overview Assignmenthelp.net Solid State: Solid State Solids have definite mass, volume and shape. This is due to the fixed position of their constituent particles, short distances and strong interactions between them.PowerPoint Presentation: In amorphous solids, the arrangement of constituent particles has only short range order and consequently they behave like super cooled liquids, do not have sharp melting points and are isotropic in nature.PowerPoint Presentation: In crystalline solids there is long range order in the arrangement of their constituent particles. They have sharp melting points, are anisotropic in nature and their particles have characteristic shapes. Properties of crystalline solids depend upon the nature of interactions their constituent particles.PowerPoint Presentation: On this basis, they can be divided into four categories, namely: molecular, ionic, metallic and covalent solids. They differ widely in their properties.PowerPoint Presentation: The constituent particles in crystalline solids are arranged in a regular pattern which extends throughout the crystal. This arrangement is often depicted in the form of a three dimensional array of points which is called crystal lattice.PowerPoint Presentation: Each lattice point gives the location of one particle in space. In all, fourteen different types of lattices are possible which are called Bravais lattices. Each lattice can be generated by repeating its small characteristic portion called unit cell.PowerPoint Presentation: A unit cell is characterized by its edge lengths and three angles between these edges. Unit cells can be either primitive which have particles only at their corner positions or centred .PowerPoint Presentation: The centred unit cells have additional particles at their body centre (body centred ), at the centre of each face (face- centred ) or at the centre of two opposite faces (end- centred ).PowerPoint Presentation: There are seven types of primitive unit cells. Taking centred unit cells also into account, there are fourteen types of unit cells in all, which result in fourteen Bravais lattices.PowerPoint Presentation: Close-packing of particles result in two highly efficient lattices, hexagonal close-packed ( hcp ) and cubic close-packed ( ccp ). The latter is also called face centred cubic ( fcc ) lattice.PowerPoint Presentation: In both of these packings 74% space is filled. The remaining space is present in the form of two types of voids-octahedral voids and tetrahedral voids. Other types of packing are not close- packings and have less efficient packing of particles. While in body- centred cubic lattice (bcc) 68% space is filled, in simple cubic lattice only 52.4 % space is filled.PowerPoint Presentation: Solids are not perfect in structure. There are different types of imperfections or defects in them. Point defects and line defects are common types of defects. Point defects are of three types - stoichiometric defects, impurity defects and non- stoichiometric defects.PowerPoint Presentation: Vacancy defects and interstitial defects are the two basic types of stoichiometric point defects. In ionic solids, these defects are present as Frenkel and Schottky defects. Impurity defects are caused by the presence of an impurity in the crystal.PowerPoint Presentation: In ionic solids, when the ionic impurity has a different valence than the main compound, some vacancies are created. Non- stoichiometric defects are of metal excess type and metal deficient type. Sometimes calculated amounts of impurities are introduced by doping in semiconductors that change their electrical properties.PowerPoint Presentation: Solids show many types of magnetic properties like paramagnetism , diamagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism . These properties are used in audio, video and other recording devices.For further info: For further info http://www.assignmenthelp.net +1-617-874-1011 (USA) +44-117-230-1145 (UK) +61-7-5641-0117 (AUS) support@assignmenthelp.net http://www.assignmenthelp.net/rss.xml http://assignmenthelp.net/Assignment_Help_Podcasts/Poderator.xml You do not have the permission to view this presentation. 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Australian Education System assignmenthelpn Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 90 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 30, 2012 This Presentation is Public Favorites: 0 Presentation Description Assignmenthelp.net provides email based Australia homework help and Australia assignment help. Australia best number 1 website that provides homework help and assignment help in most of the subject. Whether your problem is simple or complex, we have 24/7 Australian live online tutors available to help you with your questions. Get speedy and cost effective homework solutions at assignmenthelp.net for any kind of homework and assignment help from Australian tutor and professionals only. assignmenthelp.net/Australia-assignment-help.php Comments Posting comment... Premium member Presentation Transcript Chemistry Homework Help: Chemistry Homework Help An Overview Assignmenthelp.net Solid State: Solid State Solids have definite mass, volume and shape. This is due to the fixed position of their constituent particles, short distances and strong interactions between them.PowerPoint Presentation: In amorphous solids, the arrangement of constituent particles has only short range order and consequently they behave like super cooled liquids, do not have sharp melting points and are isotropic in nature.PowerPoint Presentation: In crystalline solids there is long range order in the arrangement of their constituent particles. They have sharp melting points, are anisotropic in nature and their particles have characteristic shapes. Properties of crystalline solids depend upon the nature of interactions their constituent particles.PowerPoint Presentation: On this basis, they can be divided into four categories, namely: molecular, ionic, metallic and covalent solids. They differ widely in their properties.PowerPoint Presentation: The constituent particles in crystalline solids are arranged in a regular pattern which extends throughout the crystal. This arrangement is often depicted in the form of a three dimensional array of points which is called crystal lattice.PowerPoint Presentation: Each lattice point gives the location of one particle in space. In all, fourteen different types of lattices are possible which are called Bravais lattices. Each lattice can be generated by repeating its small characteristic portion called unit cell.PowerPoint Presentation: A unit cell is characterized by its edge lengths and three angles between these edges. Unit cells can be either primitive which have particles only at their corner positions or centred .PowerPoint Presentation: The centred unit cells have additional particles at their body centre (body centred ), at the centre of each face (face- centred ) or at the centre of two opposite faces (end- centred ).PowerPoint Presentation: There are seven types of primitive unit cells. Taking centred unit cells also into account, there are fourteen types of unit cells in all, which result in fourteen Bravais lattices.PowerPoint Presentation: Close-packing of particles result in two highly efficient lattices, hexagonal close-packed ( hcp ) and cubic close-packed ( ccp ). The latter is also called face centred cubic ( fcc ) lattice.PowerPoint Presentation: In both of these packings 74% space is filled. The remaining space is present in the form of two types of voids-octahedral voids and tetrahedral voids. Other types of packing are not close- packings and have less efficient packing of particles. While in body- centred cubic lattice (bcc) 68% space is filled, in simple cubic lattice only 52.4 % space is filled.PowerPoint Presentation: Solids are not perfect in structure. There are different types of imperfections or defects in them. Point defects and line defects are common types of defects. Point defects are of three types - stoichiometric defects, impurity defects and non- stoichiometric defects.PowerPoint Presentation: Vacancy defects and interstitial defects are the two basic types of stoichiometric point defects. In ionic solids, these defects are present as Frenkel and Schottky defects. Impurity defects are caused by the presence of an impurity in the crystal.PowerPoint Presentation: In ionic solids, when the ionic impurity has a different valence than the main compound, some vacancies are created. Non- stoichiometric defects are of metal excess type and metal deficient type. Sometimes calculated amounts of impurities are introduced by doping in semiconductors that change their electrical properties.PowerPoint Presentation: Solids show many types of magnetic properties like paramagnetism , diamagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism . These properties are used in audio, video and other recording devices.For further info: For further info http://www.assignmenthelp.net +1-617-874-1011 (USA) +44-117-230-1145 (UK) +61-7-5641-0117 (AUS) support@assignmenthelp.net http://www.assignmenthelp.net/rss.xml http://assignmenthelp.net/Assignment_Help_Podcasts/Poderator.xml