Ch. 11 - Chemical Bonds

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Ch. 11 - Chemical Bonds

• II. Kinds of Chemical Bonds (p.304-308)
• Ionic Bond
• Covalent Bond
• Comparison Chart

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A. Ionic Bond

• Attraction between 2 oppositely charged ions
• Ions - charged atoms
• formed by transferring e-from a metal to a
  nonmetal

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A. Ionic Bond

• ions form a 3-D crystal lattice

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B. Covalent Bond

• Attraction between neutral atoms
• formed by sharing e- between two nonmetals

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B. Covalent Bond

• covalent bonds result in discrete molecules

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B. Covalent Bond

• Nonpolar Covalent Bond

• e- are shared equally
• usually identical atoms

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B. Covalent Bond

• Polar Covalent Bond

• e- are shared unequally between 2 different atoms
• results in partial opposite charges

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B. Covalent Bond

• Nonpolar
• Polar
• Ionic

View Bonding Animations.
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C. Comparison Chart
IONIC
COVALENT
transferred from metal to nonmetal
shared between nonmetals
Electrons
Melting Point
high
low
Soluble in Water
yes
usually not
yes (solution or liquid)
Conduct Electricity
no
crystal lattice of ions, crystalline solids
molecules, odorous liquids gases
Other Properties