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Water Notes:

Water Notes:. Composed of two hydrogen atoms and one oxygen atoms H 2 O Polar Molecule. Water:. Unevenly distributed charges due to unequal forces placed on bonding electrons Oxygen ends slightly negative Hydrogen end slightly positive. Polarity:. Allows water to form Hydrogen Bonds.

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Water Notes:

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  1. Water Notes:

  2. Composed of two hydrogen atoms and one oxygen atoms • H2O • Polar Molecule Water:

  3. Unevenly distributed charges due to unequal forces placed on bonding electrons • Oxygen ends slightly negative • Hydrogen end slightly positive Polarity:

  4. Allows water to form Hydrogen Bonds Results of Polarity:

  5. Hydrophilic: All polar molecules attracted to water Result of Polarity:

  6. Hydrophobic: Repels non-polar substances such as water Result of Polarity:

  7. Hydrogen bonds between molecules absorb heat energy, thus molecules do not move faster, therefore temperature does not rise as quickly • Need more heat energy to change temperature Stabilizes Temperature:

  8. Hydrogen bonding locks molecules together • Surface Tension: Cohesion at the water’s surface Cohesiveness:

  9. Adhesion: when water attaches to non-water molecules COHESION ADHESION Cohesiveness:

  10. Capillary Action: Movement of water up Cohesiveness:

  11. Ions and polar molecules readily dissolve in water • Substances such as salt are pulled apart by attraction of opposite charges due to polar structures Universal Solvent:

  12. Water has a density of 1g/mL • One of the few substances that is less dense as a solid than liquid • Due to hydrogen bonding and resultant pockets Density:

  13. The constant cycling of water within atmosphere and lithosphere Water Cycle

  14. Water vapor condenses into liquid water Condensation

  15. Liquid/solid water falls to the Earth Precipitation

  16. Liquid water heats up, changes to water vapor and enters the atmosphere Evaporation

  17. The evaporation of water from plants Transpiration

  18. Water not absorbed into the soil runs down the landscape by gravity Runoff

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