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BONDING UNIT TIER 4

BONDING UNIT TIER 4. Deduce the Lewis structures of molecules and ions for up to four electrons pairs on each atom Predict the shape and bond angles for species with four, three and two negative charge centers on the center atom using the valence shell electron pair repulsion theory (VSEPR)

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BONDING UNIT TIER 4

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  1. BONDING UNIT TIER 4 Deduce the Lewis structures of molecules and ions for up to four electrons pairs on each atom Predict the shape and bond angles for species with four, three and two negative charge centers on the center atom using the valence shell electron pair repulsion theory (VSEPR) Analyze the physical properties of covalent compounds resulting from single, double and triple bonds Describe and compare the structure and bonding in the three allotropes of carbon; diamond, graphite and fullerene. Describe the structure and bonding of silicon and silicon dioxide

  2. Deduce the Lewis structures of molecules and ions for up to four electrons pairs on each atom DIATOMIC MOLECULES W/ DOUBLE BONDS DIATOMIC MOLECULES W/ SINGLE BONDS DIATOMIC MOLECULES W/ TRIPLE BONDS

  3. Deduce the Lewis structures of molecules and ions for up to four electrons pairs on each atom continued : :O= C= O: CARBON DIOXIDE TWO DOUBLE BONDS : H O: H CARBON MONOXIDE TRIPLE BOND WATER

  4. Deduce the Lewis structures of molecules and ions for up to four electrons pairs on each atom continued CARBONATE CO32- POLYATOMIC IONS A group of atoms covalently bonded with a charge that form ionic bonds w/ oppositely charged ions HYDROGEN CARBONATE CO32- AMMONIUM NH4+ HYDROXIDE OH- SULFATE SO4 2- PHOSPHATE PO4 3- NITRATE NO3 -

  5. TUTORIAL ON DRAWING LEWIS STRUCTURES LOOK AT THE FOLLOWING YOU TUBE VIDEOS FOR STEP BY STEP INSTRUCTIONS ON DRAWING LEWIS STRUCTURES BASIC STEPS TO DRAW LEWIS STRUCTURES http://www.youtube.com/watch?v=PtMifU1py5I POLYATOMIC ION LEWIS STRUCTURES http://www.youtube.com/watch?v=FrICbMseyhs

  6. Predict the shape and bond angles for species with four, three and two negative charge centers on the center atom using the valence shell electron pair repulsion theory (VSEPR)

  7. TUTORIALS FOR VSPER MODEL http://www.youtube.com/watch?v=sceYMpBrNNo&safe=active http://www.youtube.com/watch?v=xwgid9YuH58 http://www.youtube.com/watch?v=qvPKWcXdo7Y

  8. DUE TO THE FACT THAT TRIPLE BONDS ARE THE STRONGEST AND SINGLE BONDS ARE THE WEAKEST, IT STANDS TO REASON THAT A MOLECULE WITH A TRIPLE BOND WILL HAVE A MUCH HIGHER MELTING AND BOILING POINT THAN A DOUBLE AND EVEN MORE THAN A MOLECULE WITH A SINGL BOND Analyze the physical properties of covalent compounds resulting from single, double and triple bonds

  9. DIAMONDS -hardest substance known to man -brittle (not malleable) -insulator (non-conductor) -insoluble in water -very high melting point GRAPHITE -soft and slippery -brittle -electrical conductor -insoluble in water -very high melting point Describe and compare the structure and bonding in the three allotropes of carbon; diamond, graphite and fullerene. WATCH THE TUTORIAL BELOW FOR MORE INFORMATION FULLERENES -soft, slippery and brittle -semi-insulator (conductivity falls between that of graphite and diamond) -Insoluble in water -low melting point solids http://www.youtube.com/watch?v=sUqr6Uk29Z8&safe=active

  10. Describe the structure and bonding of silicon and silicon dioxide http://www.youtube.com/watch?v=PiYnQLI-ufU&safe=active

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