ch. 3 notes

ch. 3 notes - Ch. 3 18:28 Water Bonds between oxygen and...

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Ch. 3 18:28 Water Bonds between oxygen and hydrogen = polar covalent bonds Polar molecule (overall charge is unequally distributed) 2 water molecules form hydrogen bonds Characteristics of water important to life Cohesion – hydrogen bonds hold the substance together Plants: transport of water/dissolved nutrients against gravity Adhesion – the clinging of one substance to another Surface tension – a measure of how difficult it is to stretch or break the surface of a  liquid (water: high surface tension) Ability to moderate temperature – absorbs heat from air that is warmer and releases it to  air that is cooler High specific heat (amount of heat required to change one gram of a substance by 1˚C)  = 4.184 J/g˚C (hydrogen bonds) Relevance to life on Earth Coastal areas have milder temperatures/climates than inland regions Stabilize ocean temperatures   favorable for marine life
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ch. 3 notes - Ch. 3 18:28 Water Bonds between oxygen and...

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