Chemical bonding

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Hope it helps! Was a presentation that I made for school :P

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Chemical bonding

  1. 1. Done by: Guhan,VISH,Fazil
  2. 2.  A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms
  3. 3. - attractive force that holds atoms or ions together - 3 types ionic, covalent, metallic - determines the structure of compound - structure affects properties - melting/boiling pts, conductivity etc.
  4. 4.  Ionic bonds are formed between two ions by the transfer of electrons  Structure affects properties - strong attractions between ions: strong bonds - high melting/boiling pt - shatter when struck (think of it as one unit) - conductivity solid: ions are so close together, fixed positions, (can’t move) NO conductivity Liquid: ions are freely moving due to a broken lattice structure Good conductivity
  5. 5.  Definition - chemical bond in which two atoms share a pair of valence electrons - can be a single, double, or triple bond single, 2e-’s (-); double, 4e-’s (=); triple, 6e-’s( ) - always formed between nonmetals - mostly low melting/boiling points  2 types of bonds - polar - non polar
  6. 6.  Non Polar - bonded atoms that share e-’s equally - same atoms bonded ex. Cl – Cl: Cl2  Polar - bonded atoms that do not share e-’s equally - different atoms bonded H ex. H – N – H: NH3
  7. 7.  Definition - a bond formed by the attraction between positively charged metal ion (cation) and the shared electrons that surround it (d sea of electrons) ex. Cu  Properties - Conductivity: Good: electrons can move freely - Malleable: lattice structure is flexible

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