Name Period Date Molecular Geometry – Ch. 9 For each of the following molecules‚ draw the Lewis Diagram and tally up the electron pairs. Then‚ identify the correct the molecular shape and bond angle. molecule lewis diagram e- tally shape bond angle 1. SeO3 2. AsH3 3. NO2 - 4. BeF2 molecule lewis diagram e- tally shape bond angle 5. SiH4 6. SeH2 7. PF5 8. SCl6 Name:
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MOLECULAR GEOMETRY Molecular geometry is the three-dimensional arrangement of the atoms that constitute a molecule. It determines several properties of a substance including its reactivity‚ polarity‚ phase of matter‚ color‚ magnetism‚ and biological activity.[1][2] The angles between bonds that an atom forms depend only weakly on the rest of molecule‚ i.e. they can be understood as approximately local and hence transferable properties. The specific three dimensional arrangement of atoms in molecules
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described as ionic lattices whose shapes are dictated by the need to place oppositely charged ions close to each other and similarly charged ions as far apart as possible. Though there is some structural diversity in ionic compounds‚ covalent compounds present us with a world of structural possibilities. From simple linear molecules like H2 to complex chains of atoms like butane (CH3CH2CH2CH3)‚ covalent molecules can take on many shapes. To help decide which shape a polyatomic molecule might prefer
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States of Matter Table of Contents Kinetic Molecular Theory Page 3 Diagram of Kinetic Molecular Theory Page 4 Solids Title Page Page 5 Diagram of Particles Page 6 Characteristics of a Solid Page 7 Pictures of Solids Page 8 Q & A Page 9 Liquids Title Page Page 10 Diagram of Particles Page 11 Characteristics of a Liquid Page 12 Pictures of Liquids Page 13 Q & A Page 14 Gases Title Page Page 15 Diagram of Particles Page 16 Characteristics of a Gas Page 17 Pictures
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Chemistry 101 Chapter 6 THERMOCHEMISTRY · Thermochemistry is the study of the quantity of heat energy released or absorbed in a chemical reaction. Example: the burning of fuel: is a heatevolving reaction · Heat : · Energy: is a form of energy the potential to do work (to move matter) exists in many different forms: Electrical energy Kinetic Energy (energy of motion) Light energy Heat energy Chemical energy (energy of substances) · Different forms of energy can be interconverted
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M12/4/CHEMI/SP2/ENG/TZ1/XX/M MARKSCHEME May 2012 CHEMISTRY Standard Level Paper 2 13 pages –2– M12/4/CHEMI/SP2/ENG/TZ1/XX/M This markscheme is confidential and for the exclusive use of examiners in this examination session. It is the property of the International Baccalaureate and must not be reproduced or distributed to any other person without the authorization of IB Cardiff. –3– M12/4/CHEMI/SP2/ENG/TZ1/XX/M General Marking Instructions Assistant Examiners (AEs) will be contacted by
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The cytoskeleton helps to maintain cell shape. But the primary importance of the cytoskeleton is in cell motility. The internal movement of cell organelles‚ as well as cell locomotion and muscle fiber contraction could not take place without the cytoskeleton. The cytoskeleton is one of a few biological areas with broad potential for drug discovery and development and has been scientifically validated in a wide variety of human diseases. The concept of the cytoskeleton was first introduced by
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Compulsory Problems with Solution 2 SALIENT FEATURES Dear Students ❆ Q.No: 70 is asked as compulsory problem in Govt Exam. ❆ Two problems to be answered out of four problems. ❆ To simplify the problem‚ hints and expected compounds related to molecular formula‚ general formula are given in this material. ❆ Problems available in PTA book and Govt exam question paper (upto March 2013) are solved in easiest way. ❆ Repeated practice is enough to get full marks. ❆ Problems are given in the following
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Molecular Electronics.-Introduction Molecular electronics is the branch of nanotechnology which deals with the applications and construction of nano building blocks that are used in electronic circuit manufacturing and desgin.It is sometimes called as moletronics.All the major electronic fabrications are supported by molecular electronics. Molecular electronics (sometimes called moletronics) involves the study and application of molecular building blocks for the fabrication of electronic components
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3.3. Atomic H/C and O/C ratio The Atomic H/C and O/C for heavy oil obtained from different HDO solvent is presented in Fig. 2. Conversion and removal of unstable acid‚ aldehyde‚ sugar and water might reduce the O/C ratio. The atomic ratio was calculated by the value of water excluded heavy oil‚ since H/C ratio could also decrease‚ despite hydrogenation. Compared with that of bio-oil (0.9)‚ atomic O/C ratio was effectively reduced via HDO reaction (0.2-0.8)‚ H/C ratio reduced 1.0-2.0 (compared with
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