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Water, Acids, Bases, and Buffers
Transcript of Water, Acids, Bases, and Buffers
Water sticks to other surfaces (adhesion.)
Water sticks to itself (cohesion.)
Water has a high specific heat
Water has a high heat of vaporization
Water expands when it freezes.
Water is a powerful solvent
Biological Significance: All of life's chemistry happens in solution (dissolved in water.)
Biological Significance: Aquatic ecosystems thrive below winter ice. Polar organisms thrive on top of the ice.
Biological Significance: It takes a lot of energy to convert liquid H2O into vapor. That helps this guy stay cool.
Biological Significance: Liquid H2O can absorb large amounts of heat with small changes in temperature, moderating local climates and maintaining constant temperatures in bodies with lots of water - like yours.
Biological Significance: surface tension provides some organisms new opportunities and habitats.
Biological Significance: Water is more buoyant and more difficult to move through than air. Trees can pull water up against gravity. What else?
H + O = H2O