Lecture-3-Water--It_37186

Lecture-3-Water--It_37186 - H20 The presence of abundant...

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H 2 0 • The presence of abundant water makes Earth a habitable planet because: is required by all life more than any It is required by all life, more than any other substance. – Water is a reactant or product in many metabolic reactions. – It is the solvent of the natural world; cells are 70% water & are surrounded in water. • Water’s unique properties are due to the interaction & structure of its olecules that emerge from the molecules, that emerge from the arrangements of its atoms. Hydrogen bonds Polar covalent bonds
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Emergent Properties of Water our emergent properties of water contribute to • Four emergent properties of water contribute to the habitability of Earth: cohesion, moderation of mperature freezing properties & its solvent & temperature, freezing properties, & its solvent & reactant properties. • Water is “sticky”: H 2 0 evaporates the hydrogen bonding of water molecules to each other ( cohesion ) & to other substances ( adhesion ). – Such properties allow r: water transport in for: plants, and surface tension.
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Water Phases ater’s high specific heat means • Water s high specific heat means that it can absorb or lose heat with only a moderate change Freezing (+/-) in temperature.
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Lecture-3-Water--It_37186 - H20 The presence of abundant...

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