Property Of Water

Question 0

Is water polar or nonpolar ?
Why?
Importance?

Answer 0

Polar
Unequal pull on shared electrons
Causes water molecule to attract by a hydrogen bond

Question 1

Water is less or more dense as a solid? Importance ?

Answer 1

Less dense

Ice acts as an insulator to water below

Question 2

Hydrogen bonds

Importance

Answer 2

Weaker than covalent bonds Except they’re stronger in H20. There is a very large amount of energy required to break
Causes: high specific heat

Question 3

What does high specific heat do and what does it mean?

Importance ?

Answer 3

Absorb and release large amount of energy without a change in temp
Helps absorbs energy from chemical processes in cells
-regulate cell temp
-stabilize global temperature outside

Question 4

Solvent

Answer 4

Homogeneous mix of substances made of solvent and solute
Molecules & ions must dissolve in water to be part of processes inside of cells
-marine organism
-plant nutrients

Question 5

Cohesion

Answer 5

The force of attraction between molecules on the same substances
( from Hydrogen bonds makes the same molecules stick together )
Ex. Rain

Question 6

Adhesion

Answer 6

The attraction of molecules of a different substance

Ex. Transpiration travels through roots and goes to leaves

Question 7

Polar

Answer 7

Like dissolves like (polar molecules dissolve in water due to attraction of molecules)
Ex. Sugars & proteins in blood

Question 8

Non-polar

Answer 8

No charge and not attracted to charged molecules

ex. Oil & water

Question 9

Concentration

Answer 9

Specific amount of solute dissolving in a solvent

Question 10

Solute

Answer 10

Substance dissolved in a solvent (like powder)

Question 11

Solvent

Answer 11

Dissolves another substance and in greater amount (water)