Properties of Water and Important for Life

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this makes them "stick" to each other with a strong attraction called a ____

hydrogen bond

the oxygen atom attracts its shared electrons____ , so the oxygen atom has a slightly ____ charge

strongly, negative

water has a strong ___

surface tension

aquatic life can live without rapid/deadly changes in ____

temperature

water is a ____

terrific solvent

this is also why water can bead up into droplets on ____

glass surfaces

water is drawn up the tube, against ___, by the forces of ____ and ___

gravity, cohesion, adhesion

it takes a lot of ____ for water molecules to leave their ___, held together by ____

heat energy, liquid form, hydrogen bonds

water has a ___

high specific heat

high specific heat means it takes ____ of energy to change a body of water's ____

a lot, temperature

____

action

water has a relatively high ____ and ___ of ____ for a small ____

boiling point, heat, vaporization, hydride molecule

surface water molecules can evaporate when they gain enough ___ to break free from the ____ of the molecules around them

energy, hydrogen bonds

water is great for carrying these ___ and ___ within ___ or ____ between different body ____

ions, molecules, cells, blood vessels, tissues

many___ and ___ necessary for life____ in water

ions, polar molecules, can dissolve

ice is ___ than water

less dense

scientists believe ____ is a requirement for life to exist, which is why we keep looking for it!

liquid water

because water does not boil at a ____, most water on the planet is found in the form of ____, which is essential for life!!

lower temperature, liquid

many ___ in our solar system have evidence of ice and perhaps ____ is underneath

moons, liquid water

molecules at the surface hold ____ to each other than molecules further ____ the surface

more tightly, under

some life depends on being able to float ____

on top of the surface

is there water on ____?

other planets?

Water Molecules are very ____

polar

the hydrogen has a slightly ___ charge

positive

water moves up ____ tubes within plants

thin

most planets are ____ or ____ for liquid water to exist

too hot, too cold

this also allows for some animals to live on the ____

top of ice!

ice forms at the ____ because of the ____. Aquatic organisms that live underneath the ice in the water are ___ from extreme cold by the ice

top, cold air, insulated


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