Ionic Compounds and Bonds: made of ions, metal + nonmetal, no prefixes in names, high melting points, solids at room temperature, electrons are transferred, Fe(NO3 ) 2, conductors when dissolved in water, conduct electricity when melted but not as solids , MgS, net charge is zero, Electronegativity Difference greater than 1.7, Dissociate in water, brittle solids, Molecular Compounds and Bonds: molecules, nonmetal+nonmetal, prefixes in names, low melting points, solids, liquids, or gases at room temperature, electrons are shared, SO2, soft and waxy, fluorine (F2) , often not water soluble, not conductors under any conditions, Electronegativity difference below 1.7, Polar or nonpolar, Do not form ions, Both Ionic and Covalent Compounds: result in elements having an octet of valence electrons, do not conduct as solids, type of intramolecular force, Stronger than intermolecular forces, Pure Substance, Metallic Substances and Bonds: Lead, Electrons are delocalized, electrons form a "sea" between nuclei, Very good conductors of electricity, Lose electrons when forming ions, Form positive ions, malleable and ductile,
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Ionic & Molecular Compounds
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Rothb
10th Grade
Chemistry
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