Chapter 6 Key Concepts Flashcards

1
Q

Anomalous properties of water 1

A

Ice is less dense than water

  • h bond holds water molecules further apart in an open lattice tetrahedral structure full of holes decreasing density . Bond angle abound the h involved is like 180
  • when lattice collapse they move closer together again
  • making insulating layer
  • presents water from freezing
  • each h2o can make 4 h bonds
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2
Q

Another anomalous property of water

A
  • high surface tension
  • viscosity allowing insects to walk on water
  • detergents decrease the surface tension making water wetter
  • high boiling point cuz bare energy needed to break h bond. Without h bond water boil at -75 no liquid water so no life as we know it as it would be gas at room temp. When water boils h bonds break completely
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