Structure & Properties of Water
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Last updated 1:12 PM on 5/3/23
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29 Terms
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structure of water
1 molecule of water is made up of 2 hydrogen atoms bonded with 1 oxygen atom
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covalent bond
the bond that forms water
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H₂O
chemical formula of water
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polar molecule
molecule that has electrically charged areas
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non-polar substances
substances that do not have charged ends
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the negative end of the oxygen of another molecule
positive hydrogen ends of one molecule are attracted to what?
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water is a polar substance
the properties of water all happen because?
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capillary action
the combined force of attraction among water molecules and with the molecules of the surrounding material
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capillary action
cohesion + adhesion = ?
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surface tension
the tightness across the surface of water that is caused by the polar molecules pulling on one another
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surface tension
it makes the surface act like a solid
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universal solvent
this is a nickname given to water
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solvent
the thing doing the dissolving
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solute
the thing that dissolves away
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other polar molecules
can be dissolved by water
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non-polar substances
can not be dissolved in water
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because water is a polar molecule and is shaped like a wedge, it is able to break up substances into smaller pieces (dissolve)
why is water so good at dissolving things?
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cohesion
the attractive force between water molecules
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adhesion
occurs when molecules of water are attracted to other substances
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4°C
water is most dense
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until 4°C
water contracts
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from 4°C to 0°C
water expands
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density of water
prevents water from freezing from the bottom up
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ice
forms on the surface first
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a crystalline lattice
when water reaches 0oC, water becomes locked into
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10% less
ice is about _____ dense than water at 4°C
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specific heat
the amount of energy needed to increase the temperature of something 1 degree C
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high
water has a really ____ specific heat
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high specific heat
takes a lot of energy for water to increase its temperature
Note 
Flashcards (44)