Chapter 5 Chemical Bonding: The Covalent Bond Model Chemistry 120 Online LA Tech Chapter 5-1 Whats the fuel in space shuttle? CO 5.1
Space Shuttle liftoff NASA Chemistry 120 Online LA Tech Chapter 5-2 Hydrogen molecule: A covalent bond Fig. 5.1 Electron sharing can occur only when electron orbitals from
two different atoms overlap. Chemistry 120 Online LA Tech Chapter 5-3 Number of covalent bonds and Lewis symbol Fig. 5.2 The number of covalent bonds formed
by a nonmetallic element is directly correlated with the number of electrons it must share in order to obtain an octet of electrons. Chemistry 120 Online LA Tech Chapter 5-4
Covalent and Coordinate covalent Bond Fig. 5.3 (a) A regular covalent single bond is the result of overlap of two half-filled orbitals. (b) A coordinate covalent single bond is the result of overlap of a filled and a vacant orbital. Chemistry 120 Online LA Tech Chapter 5-5 Molecular structure
Fig. 5.4 The sulfur dioxide molecule. Chemistry 120 Online LA Tech Chapter 5-6 Pyramidal molecule
Fig. 5.5 The phosphorus trifluoride molecule. Chemistry 120 Online LA Tech Chapter 5-7
Linear Molecule Fig. 5.6 The hydrogen cyanide molecule. Chemistry 120 Online LA Tech Chapter 5-8
Unpaired electrons CC 5.1 Chemistry 120 Online LA Tech Chapter 5-9 Polyatomic ions held by covalent bonds Fig. 5.7
The sulfate ion. Chemistry 120 Online LA Tech Chapter 5-10 Electron pair repulsions Fig. 5.8
Arrangement of valence electron pairs about a central atom that minimize repulsions between the pairs. Chemistry 120 Online LA Tech Chapter 5-11 Where you find covalent molecules?
CC 5.2 Chemistry 120 Online LA Tech Chapter 5-12 Space filling models Fig. 5.9 (a) Acetylene molecule. (b) Hydrogen peroxide molecule. (c) Hydrogen azidde molecule.
Chemistry 120 Online LA Tech Chapter 5-13 VSEPR theory and molecular geometry Chemistry 120 Online LA Tech Chapter 5-14 Linus Pauling and Electronegativity
Fig. 5.10 Linus Pauling received the Nobel Prize in chemistry in 1954 for his work on the nature of the chemical bond. Bettman/CORBIS Chemistry 120 Online LA Tech
Chemistry 120 Online LA Tech Chapter 5-16 Polarity in heteonuclear diatomic molecules Fig. 5.12 (a) In the nonpolar covalent bond present,
there is a symmetrical distribution of electron density. (b) In the polar covalent bond present, electron density is displaced because of its electronegativity. Chemistry 120 Online LA Tech Chapter 5-17
Types of covalent bond CAG 5.2 Chemistry 120 Online LA Tech Chapter 5-18 Predicting polarity of molecule
Fig. 5.13 (a) Methane is a nonpolar tetrahedral molecule. (b) Methyl chloride is a polar tetrahedral molecule. Chemistry 120 Online LA Tech Chapter 5-19
Prefixes for naming covalent compounds Table 5.1 Chemistry 120 Online LA Tech Chapter 5-20 Common names of covalent compunds Table 5.2
Chemistry 120 Online LA Tech Chapter 5-21 Naming covalent compounds Fig. 5.14 The tetraphosphorous
decoxide molecule. Chemistry 120 Online LA Tech Chapter 5-22
4c. Describe the causes and effects of heat transfer as it relates to the circulation of ocean currents, atmospheric movement, and global wind patterns (e.g., trade winds and the jet stream). Provide examples of how these global patterns can affect...
25.Tell which basic provinces are in each region, and a characteristic for each region. Hudson Bay Lowlands- flat, poorly drained, mix of tundra and podzols, swamp forests (ON, MB) Arctic Lowlands- upland plateaus and lowland plains, cold & dry climate,...
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Lets call this ASL (Application Specific language) Tools to manipulate information expressed in language and key data of application (cf coordinate transformations). Lets call this ASTT (Application specific Tools and Transformations) ASL must support Data sources such as sensors (cf...
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WTO Trade is a 2-way street Conclusion "The Domestic Politics of Trade: A U.S. Farmers View" Ron Heck, President American Soybean Association Issues To Be Addressed: "U.S. Agriculture's Position on Doha Round WTO Negotiations" "Correcting Myths" Summary and Conclusions "U.S....
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