water
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WaterWater HH22OO2 hydrogen atoms, 2 hydrogen atoms, 1 oxygen atom1 oxygen atom
It’s a compound It’s a compound
WaterWaterCovalent compoundCovalent compoundSharing valence Sharing valence electrons (Veelectrons (Ve--))
Sharing VeSharing Ve-- unequally unequally
WaterWater ““H” side tends to be pos.H” side tends to be pos. ““O” side tends to be O” side tends to be neg.neg.
Like tiny “magnets”Like tiny “magnets”PolarPolar
WaterWater Cohesion- Cohesion-
attraction of attraction of the liquid the liquid molecules molecules to to themselvesthemselves
Adhesion- Adhesion- attraction of attraction of the liquid the liquid molecules molecules to other to other moleculesmolecules
WaterWater
Penny Surface
Surface Surface TensionTension Pulling together of the Pulling together of the surface molecules of a surface molecules of a liquidliquid
Water has high surface Water has high surface tensiontension
Surface TensionSurface TensionWater’s Water’s surface has surface has a “skin”a “skin”
A small A small force will force will not break not break the “skin”the “skin”
Edge of paperclip
Surface Surface TensionTension‼In glass, water In glass, water curves up the sides curves up the sides
‼MeniscusMeniscus