why water is essential for life
- Relate the structure of water to hydrogen bonding
how hydrogen bonds give water its unique properties
Cohesion
Water bonding/sticking to itself
Adhesion
Water bonding/sticking to other things
Surface Tension
A measure of how hard it is to break the surface of a liquid
how water moderates temperature
Water moderates temperature because of its high heat capacity.
evaporative cooling and its biological importance
As water evaporates, it draws thermal energy from the air or any surface it comes in contact with, causing a drop in perceived temperature.
why ice is less dense than liquid water
Ice is less dense than water because of hydrogen bonding it the particles in water expand as they freeze.
Why this is ice being less dense than water important for aquatic life
This matters for aquatic life because ice can float on the surface of water, allowing aquatic life to live beneath it.
Solute
substance that gets dissolved(Salt)
Solvent
A substance that does the dissolving(water)
Solution
Solute + Solvent
“like dissolves like.”
A polar compound dissolves a polar compound and non-polar compound dissolves non polar compound
Hydrophilic
Loves water (dissolves or mixes with water)
Hydrophobic
Hates water (Doesn’t mix with water)
hydrophobic interactions
Keep non-polar molecules together and away from polar molecules
emulsifiers
molecules with polar and non-polar sides
Amphipathic
Molecules that have both polar and nonpolar properties, giving them Hydrophilic and hydrophobic properties
how water dissociates into ions
In water, a very small % of break apart in to Ions because they lose a proton to another water particle.
Acids
Bases
Neutral Solutions
pH scale
Scale that describes how acidic or basic a solution is.
