org/wiki/Ionic_bond#Comparison_with_covalent_bonding 5. There are many types of chemical bonds and forces acting together to bind molecules together. The two most basic types of bonds are characterized as either ionic or covalent. In ionic bonding‚ atoms transfer electrons to each other. Ionic bonds require at least one electron donor and one electron acceptor. In contrast‚ atoms that have the same electronegativity share electrons in covalent bonds since donating or receiving electrons is unfavorable. Found @ http://chemwiki
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The Combustion of Diamond and Methane Methane is a hydrocarbon compound that is found in a gaseous state at room temperature. It has the chemical formula CH4‚ it is an odourless‚ colourless gas that is a large percentage of ‘natural gas’ and is a large contributor to global warming as it is a greenhouse gas and is flammable so is used as a fuel. Methane is a product of the covalent bonding of carbon and hydrogen. Products of the combustion of methane include carbon dioxide‚ water‚ soot and carbon
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structure of macromolecules because it has a valence of 4. What does this mean? 2. Organize the types of bonds according to the degree to which electrons are shared between two atoms. 3. Which of the following statements best sums up the number of covalent bonds that can be formed by the four most common atoms in living things? 4. Which linking verb phrase would best connect the hydrogen bonds term in the map to one of the other terms? 5. Which of the following statements most accurately describes
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Nutrition experts postulate that the nutrition we need is those nutrients commonly found in a routine diet. Industry delegates‚ backed by a riveting history‚ defend that foods are not composed of enough nutrients‚ and we need additional supplements. Fortuitously‚ many awesome studies have now solved the problem. New studies have shown that people who take supplements that thought they were improving their health‚ actually made it worse. October 10‚ 2011‚ researchers from the University of Minnesota
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creating small scale electronic components for products such as computers. Scientists have succeeded in imaging and forming a unique bond between a single gold atom and a single organic molecule called a pentacene. They managed to bind the atom to the pentacene and take images of rearrangements of the electrons participating in the formation of the chemical bond. The pentacene has been selected as it is a special class of molecule that has qualities of particular use in molecular electronics
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CHEMICAL ATTACK ON SYRIA Over 110‚000 people have died in Syria since the beginning of a years-long conflict in the country. On August the 21st‚ the U.S government says that 1‚429 died through the chemical attacks which marked the sea change in foreign policy towards the Middle Eastern country. The impact of poison gas is horrific and fatal. Those exposed to the nerve agent can die within 15 minutes of exposure. Mr. Obama’s absolutist position against it is backed up by international law and the
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Name: ______________________________________ Date: ________________________ Student Exploration: Dehydration Synthesis Vocabulary: carbohydrate‚ chemical formula‚ dehydration synthesis‚ disaccharide‚ glucose‚ hydrolysis‚ monosaccharide‚ polysaccharide‚ valence Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. If you exercise on a hot day‚ you need to worry about dehydration. In this context‚ what do you think dehydration means? When you are exercising in the heat you
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Intro to Biochemistry Types of bonding: Ionic Results from the attraction between two oppositely charged atoms or molecules. They must lose or gain electrons to become charged. For example‚ a sodium molecule and a chlorine molecule form an ionic bond to create sodium chloride (NaCl) Covalent Results from the sharing of one or more pairs of valence electrons to create a stable molecule. For example‚ the covalent bonding of hydrogen ions creates hydrogen gas (H2) or the covalent bonding between
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electron configuration by sharing their electrons and forming a Covalent bond. A covalent bond is a chemical bond in which two atoms share a pair of valence electrons. When two atoms shair one pair of electrons‚ the bond is called a singe bond. Molecules of Elements Two hydrogen atoms bonded together form a unit called a molecule. A molecule is a neutral group of atoms that are joined together by one or more covalent bonds. The hydrogen molecule is neutral because it contains two protons.
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HYDROCARBONS: HYDROCARBON Acyclic or Aliphatic Carbocyclic or Cyclic ( Open chain) Alicyclic Aromatic Alkanes Alkenes Alkyne Cycloalkanes Cycloalkenes Cycloalkynes Alkanes:- Paraffins General formula CnH2n+2 sp3 hybridisation C–C bond length 1.15 4 A0 Chemically unreactive Show chain‚ position and optical isomerism. Heptane has 9 isomer‚ Octane 18 and Decane 75. Nomenclature: 164 Preparation:- Wurtz reaction:- Follow mainly free radical mechanism Useful in preparing
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