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Ionic bond

chemistry/intro to bio

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Vaneza Paredes 1) Chemical Bonds Almost everything we do in life, even something as easy as breathing all comes from chemical bonds. There are strong bonds, as well as weak bonds. This all depends on the interactions of electrons. When a metal bonds with a nonmetal, an ionic bond was formed. This is very strong. A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms, is covalent bonding.

Bonding General concepts

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Bonding ? General Concepts Electronegativity: The ability of anatom in a molecule to attract shared electrons to itself. Ionic Bonds Electrons are transferred Electronegativity differences are generally greater than 1.7 The formation of ionic bonds is always exothermic! Determination of Ionic Character Compounds are ionic if they conduct electricity in their molten state Electronegativity difference is not the final determination of ionic character Coulomb?s Law ?The energy of interaction between a pair of ions is proportional to the product of their charges, divided by the distance between their centers? There will be a negative sign on the Energy once calculated?it indicates an attractive force so that the ion pair has lower energy than the separated ions.

Biology

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AP BIOLOGY VOCABULARY BioChemistry anion atomic mass atomic number cation chemical equilibrium covalent bond electronegativity hydrogen bond ionic bond isotope mass number orbital trace element valence valence electron van der Waals interaction acid adhesion aqueous solution base buffer cohesion heat heat of vaporization hydration shell hydrophilic hydrophobic molarity mole molecular mass pH solution specific heat surface tension temperature alcohol amino group carbonyl group carboxyl group enantiomer functional group hydroxyl group isomer organic chemistry phosphate group sulfhydryl group helix pleated sheet amino acid antiparallel carbohydrate cellulose chaperonin chitin cholesterol condensation reaction conformation denaturation deoxyribose fatty acid gene glycogen hydrolysis

Ionic/Covalent Bonds

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Ionic bond is between a metal and non-metal and has the electronegativity difference of 1.7 or higher. Also Ionic bonds take electrons from other elements. Convalent is usually between a non-metal and non-metal and shares electrons.
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