Water – Liquid Awesome: Crash Course Biology #2

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Hank teaches us why water is one of the most fascinating and important substances in the universe.

Review:
Re-watch = 00:00
Introduction = 00:42
Molecular structure & hydrogen bonds = 01:38
Cohesion & surface tension = 02:46
Adhesion = 03:31
Hydrophilic substances = 04:42
Hydrophobic substances = 05:14
Henry Cavendish = 05:49
Ice Density = 07:45
Heat Capacity = 09:10

Citations:
http://www.extension.umn.edu/distribution/youthdevelopment/components/0328-02.html
http://www.uni.edu/~iowawet/H2OProperties.html
http://www.hometrainingtools.com/properties-water-science-teaching-tip/a/1274/
http://science.howstuffworks.com/environmental/earth/geophysics/h2o7.htm
http://www.robinsonlibrary.com/science/chemistry/biography/cavendish.htm
http://chemistry.mtu.edu/~pcharles/SCIHISTORY/HenryCavendish.html
http://www.nndb.com/people/030/000083778/
http://www.notablebiographies.com/Ca-Ch/Cavendish-Henry.html

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24 Comments

  1. Me:*spending all my time on roblox*
    My dad:you should do some more academic work.
    Me:fineee i will see one of those biology courses on yt.
    Me:finds this series,and slowly starting to love it also watching all of this guy s vids.
    Me:realises these vids are for ppl in college and i am legit ten years old.

  2. Stop. Stop, stop, stoppity stop. At 9 minutes: 'If all the ice at the North Pole would sink, water levels would rise, and there’d be no land’ (paraphrased). Um…do that experiment with the ice cube again. Look at the water level before and after. Oh, look, it goes up! Now wait for the ice to melt. Did the water level go up more? No! Ice floating on water displaces its own mass of water. It’s called buoyancy. I know you knew this already, and just forgot for a moment. Might want to add a text comment on the video, though, or you’re gonna confuse a lot of people.

  3. "which is why we put hot water bottles in our bed and cuddle with them when we're lonely" smiles sadly what an epic mood

  4. so cohesion is possible because water molecules are more electrically attracted to each other than to the surface molecules,
    and adhesion is possible because water molecules are more electrically attracted to the surface than each other?

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