1. Water Vocabulary Positive charge 2 hydrogen atoms 1 oxygen atom
Share electrons
negative charge

2. Polar Molecule Has a positive charge and a negative charge
Opposite charges ATTRACT like magnets

3. Cohesion Water drops sticking to other water drops
Because water is polar
Why rain drops get bigger
Drops on a penny
“COnnects to other water

4. Adhesion Water drops sticking to other surfaces
Water “adding” on to another surface
Water on a windshield
Dew on the grass (wet grass in the morning)
condensation

5. Surface Tension
Water molecules sticking together to form a “skin” on top of water
Why belly flops hurt
Water striders - insects that walk on water

6. Capillary Action Water moving up or through a material
Plant roots absorbing water from soil
Paper towels soaking up water

7. Ice Floats in water because it has LESS DENSITY
Polar bears and penguins walk on top of ice
Fish survive below the ice

8. Universal Solvent Water can dissolve a lot of things
Because it is polar molecule
Solute is the powder that dissolves
Solvent is the liquid that dissolves the solute

9. Videos
Video about water properties TedEd