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The Properties of Water. The Mickey Mouse Molecule!. Hydrogen. Hydrogen. Oxygen. Structure of a Water Molecule. Water is polar. A polar molecule is a molecule that has an electrical charge. Water is made of: 2 Hydrogen Atoms and 1 Oxygen atom.

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the mickey mouse molecule
The Mickey Mouse Molecule!




structure of a water molecule
Structure of a Water Molecule
  • Water is polar.
  • A polar molecule is a molecule that has an electrical charge.
  • Water is made of:
    • 2 Hydrogen Atoms and 1 Oxygen atom.
    • The chemical formula for water is:H2O
    • Hydrogen has a positive (+) charge and Oxygen has a negative (-) charge.
4 key properties of water
4 Key Properties of Water
  • Capillary Action
  • Surface Tension
  • Universal Solvent
  • Specific Heat
capillary action
Capillary Action
  • Capillary action is the combined force of attraction among water molecules and with the molecules of surrounding materials.
  • Examples of Capillary Action of Water:
    • Liquid rising inside a straw
    • Paper towel absorbing water
    • Wet jeans
    • Plant roots absorbing water
    • Sponge
surface tension
Surface Tension
  • Surface tension is the tightness across the surface of water that is caused by the polar molecules pulling on one another
  • Examples of the surface tension of water:
    • Raindrops forming beads on surface
    • Water strider
    • Paperclip Floating on Water
    • Drops of Water on a Penny
    • Skipping Rocks
    • Meniscus
    • Belly Flops
jesus lizard
Jesus Lizard

My real name is the “Green Basilisk Lizard “....

But not like the one from Harry Potter!!! 

universal solvent
Universal Solvent
  • Solution: A mixture that forms when one substance dissolves another.
  • Solvent: substance that does the dissolving.
  • Solute: substance that gets dissolved.
    • Water is the universal solvent because it dissolves so many substances because of its high polarity.
    • Water can dissolve substances such as salt and sugar but cannot dissolve oil.

- Polar Dissolves Polar.

specific heat
Specific Heat
  • Water requires a lot of heat (gain or loss) to change its temperature due to the strong attraction among water molecules.
  • Specific heat is the amount of heat needed to increase the temperature of a substance by 10C
  • Example of specific heat:

- Water temperature vs. sand temperature at the beach during the day.

why does water have a high specific heat
Why does water have a high specific heat?
  • Water’s high specific heat is due to thestrong attraction among water molecules.
  • The molecules arestuck togetherand it takesa lot of energyto break the strong bonds of the water molecules.
changing state
Changing State
  • Water exists in 3 forms:
    • solid
    • liquid
    • gas




molecule movement
Molecule Movement

Molecules move the slowest in a solid.

  • Solid-molecules are close together

Molecules move the fastest in a gas.

  • Gas-molecules move freely; they are spread apart
phase changes
Phase Changes
  • Melting-water changes from a solid to a liquid
    • Example: Ice melts into water
  • Freezing-water changes from a liquid to a solid
    • Example: Water freezes into ice





phase changes1
Phase Changes
  • Evaporation- process by which molecules at the surface of a liquid absorb enough energy to change to the gaseous state
    • Example: boiling water, hair air-drying, wet clothes drying on a clothesline outside, puddle drying up
  • Condensation-process by which a gas changes to a liquid
    • Example: water droplets on the outside of a glass

fogging up a window