1. Water
H2O
2 hydrogen atoms, 1
oxygen atom
It’s a compound

2. Water
Covalent compound
Sharing valence
electrons (Ve )
Sharing Ve- unequally
-

4. Water
 “H” side tends to be pos.
 “O” side tends to be neg.
 Like tiny “magnets”
 Polar

8. Water
 Cohesion-
attraction of
the liquid
molecules to
themselves

9. Water
 Adhesion-
attraction of
the liquid
molecules to
other
molecules

10. Penny Surface

11. Surface
Tension of the surface
 Pulling together
molecules of a liquid
 Water has high surface
tension

13. Surface Tension
Water’s
surface has
a “skin”
A small
force will not
break the
“skin”

15. Edge of
paperclip

16. Surface
Tension
In glass, water curves
‼ In glass, water curves
up the sides
‼Meniscus