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Covalent bonds

Covalent bonds. Methane has four covalent bonds between carbon (C) and hydrogen (H). The figure above shows the methane molecule in four different views. Notice how these different views represent the atoms and their bonds differently. Dissolving ions in water. NaCl ions in water.

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Covalent bonds

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  1. Covalent bonds • Methane has four covalent bonds between carbon (C) and hydrogen (H). • The figure above shows the methane molecule in four different views. • Notice how these different views represent the atoms and their bonds differently

  2. Dissolving ions in water NaCl ions in water NaCl crystal structure • The ability of ions and other molecules to dissolve in water is due to polarity. • The opposite partial charge of the water molecule surrounds each ion.

  3. The polarity of water Hydrogen bonding between water molecules • Water is a polar molecule, meaning that there is an uneven distribution of electron density. • Water has a partial negative charge near the oxygen atom and a partial positive charge near the hydrogen atoms. • An electrostatic attraction between the partial positive and negative charges results in the formation of a hydrogen bond.

  4. The Energy of Bonds Biological Energies

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