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Determining Bond Type
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Two Main Types of Chemical Bonds
Ionic Bond Electrons are transferred between atoms Usually occurs btw a metal and nonmetal Covalent Bond Electrons are shared between atoms Usually occurs btw nonmetals
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How do I determine Bond Type?
Think of a chemical bond as a battle over electrons I want this electron! No, I want it! e-
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How do I determine Bond Type?
Bond type can be determined by looking at the electronegativity difference in the 2 atoms Electronegativity – a measure of how strongly an atom attracts electrons e-
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Electronegativity What elements would you expect to have high electronegativities? What elements would you expect to have low electronegativities?
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Bond Type and Properties
Ionic Compounds High melting points, so they are ________ at room temperature Soluble in water Conducts electricity as a solution in water Consist of Metal bonded to Nonmetal solids
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Bond Type and Properties
Covalent Compounds Consist of all __________ Low melting points, many are liquids or gases at room temperature Do not conduct electricity as a solution in water Sometimes soluble in water: Polar Covalent compounds are soluble in water Nonpolar Covalent compounds are not soluble nonmetals Solubilty Rule: Likes Dissolve Likes (Polar compounds dissolve in polar, nonpolars dissolve in nonpolars,Ionics dissolve in polar)
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