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Periodic Table, Bonding, Nanoscale Materials

Periodic Table, Bonding, Nanoscale Materials. Heinemann Chemistry 1 Part 2, p 166. BONDING and PROPERTIES. Graphite Layered structure, 2-D carbon layers. Two types of bonding. Very soft and slippery (used as a lubricant or in pencils). Density: 2.266 g/cm 3

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Periodic Table, Bonding, Nanoscale Materials

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  1. Periodic Table, Bonding, Nanoscale Materials Heinemann Chemistry 1 Part 2, p 166

  2. BONDING and PROPERTIES Graphite Layered structure, 2-D carbon layers. Two types of bonding. Very soft and slippery (used as a lubricant or in pencils). Density: 2.266 g/cm3 Easily compressed normal to layering. The planar structure of graphite allows electrons to move easily within the planes. This permits graphite to conduct electricity (used in batteries) and heat as well as absorb light and, unlike diamond, appear black in color. Diamond It is a strong, rigid 3-D structure. Single bonding type. Hardest known material. High strength and durability Density: 3.514 g/cm3 Least compressible material. Best known conductor of heat (thermal conductivity x5 Cu) An insulator. Transparent. Its electrical resistance, optical transmissivity and chemical inertness are remarkable. Nanomaterials – “bottom up” versus “top down”

  3. The Graphene Sheet • The quasi zero-, one-, and two-dimensional carbon structures • fullerenes • carbon nanotubes • graphene/graphite • exhibit interesting bonding properties.

  4. The CARBON Group (Group 14 Elements) Source: www.worldofteaching.com

  5. Diamond Structures Carbon & Silicon Source: www.worldofteaching.com

  6. Quantum dots – size-dependent colour variation

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