7 Covalent Bonding- Flashcards

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Covalent bond

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The chemical bond that results from sharing valence electrons

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Sigma Bonds

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when a single pair of shared electrons is in an area centered between two atoms and the atomic orbitals overlap end to end

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pi Bond

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forms when parallel orbitals overlap and share electrons

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Endothermic reaction

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Occurs when a greater amount of energy is required to break the existing bonds in the reactants, than is released when the new bonds form products

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Exothermic Reaction

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occurs when more energy is released during product bond formation than is required to break bonds in the reactants

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Lewis Structure

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A model that uses electron-dot structures to show how electrons are arranged in molecules. Pairs of dots or lines represent bonding pairs

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Molecule

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Forms when two or more atoms covalently bond and is lower in potential energy than its constituent atoms

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Single Covalent Bonds

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When only one pair of electrons is shared

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Double Bonds

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When two pairs of electrons are shared between two atoms

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Triple Bonds

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When three pairs of electrons are shared between two atoms