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21 terms

Ch 2.3 Chemistry of water

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expands
Most substances contract when they solidify, but water_____.
hydrogen
This is due to the ______ bonds in ice being farther apart that in liquid water.
less
This makes it _____dense than water
floats
Density is the reason why ice _____ in water.
insulator
Frozen ice at the surface of a body of water acts as an _____.
Cohesion
_____refers to the ability of water molecules to cling to each other.
Hydrogen
This clinging is due to the fact that water molecules are held together by _____bonds.
transport
Most organisms vessels that utilize this function of water in order to______nutrients and wastes.
plants
In _______, vessels are used to help move the cohesive water throughout from the root to the leaves.
adhesion
when moving through the vessels in plants, ____ also keeps the water attached to the vessels for movement.
gas
Water can be a solid, liquid or _____.
temperature
The changes in matter that water can make are due to ______.
0
At ____ degrees Celsius, water freezes.
Celsius
At 100 degrees _____ water begins to evaporate.
properties
These changes in water due to temperature differences are some of the reason why water has so many special ______.
resists changes of state
A coastal climate is moderated primarily by which of the following properties of water? Water_________.
Adhesion
the ability of water molecules to cling TO OTHER polar surface
Cohesion
The ability of water molecules to cling TO EACH OTHER due to hydrogen bonding.
Surface tension
force that holds moist membranes together due to to the attraction of water molecules.
Hydrogen Bond
The attraction of a slightly positive hydrogen to a slightly negative atom in the vicinity.
Calorie
Is the amount of heat energy needed to raise the temperature of 1 g of water 1ºC.