Name_________ WTHS Biology Keystone Review
2012-2013
Water-Liquid Awesome:
Biology # 2
This worksheet goes with podcast # 2 from Crash Course Biology found on youtube
The goal for today’s video:
1. Identify the amazing properties of water
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Video Outline
introdcution
molecular structure & H bonds
Cohesion & Surface tension
adhesion
hydrophilic substances
hydrophobic substances
Henry Cavendish
Ice density
Heat capacity
prefix/suffix
meaning
cohydro-phobic
-philic
Molecular Structure
Label the water molecule and identify the poles as
either positive or negative
HYDROGEN BONDS
The Positive ______ of one water molecule bonds with the negative _____
of another.
Hydrogen bonds are relatively strong/weak (circle one).
Water has high cohesion which results in high surface tension. Cohesion is
when things that are _________ bond.
_____________ is the attraction between different molecules.
Water can defy gravity through _______________ _________________
WTHS
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Name_________ WTHS Biology Keystone Review
Water makes a great
2012-2013
(meaning it can dissolve a lot of things)
Water is the Universal Solvent. More substances dissolve in water than in any
other substance on earth!
 The things that water dissolves (the solutes) are known as
_________________________ (water loving)
 They are hydrophilic because they are _________
Even the Universal Solvent sometimes fails to dissolve. The substances that water
is unable to dissolve are known as _______________ or fearful of water. Theses
substances are polar/non-polar (circle one).
 Henry Cavendish Biolo-graphy
Ice density
The solid form of water_______________ when added to the liquid form.
This makes life possible!!!
Water also has the ability to hold on to heat which is also known as having a high
Example of water having a high heat capacity you might know from your kitchen:
___________________________________________________________
Create a concept map using the terms: hydrogen bond, water, solvent, polar, adhesion, cohesion
Sum
it up!
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