Water Chapter3 - Water the molecule of life Water is...

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1 Water – the molecule of life Organisms are water of Earth’s surface is covered by water Life arose in water; before transition to land Photosynthesis: Water is for all living organisms
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2 What’s so special about water??? Remember: water is Fig. 2.12 Polarity allows to form water molecules Fig. 3.2 Each water molecule can
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3 Hydrogen bonds give water 4 key properties that are essential to life Cohesion: linkage of Hydrogen bonds are At body temperature, molecules are Hydrogen bonds give Fig. 3.2
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4 Cohesion & water transport in plants Fig. 3.3 • Cohesion allows of water against in plants. • Evaporation of water at leaves water up from . Cohesion gives water high
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5 of water Atoms & molecules are always in motion, so they have Faster motion = Heat: amount of energy in a body of matter Temperature: heat due to kinetic energy The specific heat of: Water = Ethyl alcohol = Iron = Calorie: the amount of heat absorbed or released for of water changes by °C.
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  • Fall '07
  • Fields
  • 1 mole, 1°, 0.2 M, 1 gram, 9 g

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