Biology Chapter 3: Properties Of Water

Front 1

Emergent properties

Back 1

when single things come together and form more complex behaviors collectively

Front 2

Cohesion

Back 2

Tendency of molecules to stick to each other

Front 3

Adhesion

Back 3

Tendency of molecules to stick to other substances

Front 4

Surface Tension (Relating to water)

Back 4

Results when the water molecules on the surface of the water are only attached to molecules below them in the actual water, thus having no H-Bonds with any molecules above them. Causing their surface to remain very strong

Front 5

Specific Heat

Back 5

amount of heat a substance needs to absorb in order to increase the temperature of 1g of substance by 1C.

Front 6

Waters Specific Heat

Back 6

1g per / 1 Degree C

Front 7

High Heat Capacity

Back 7

Substance can absorb more energy or more heat with a smaller change in temperature

Front 8

High Heat of Evaporation

Back 8

Regarding converting a substance from a liquid to a gas. Higher heat means its going to take more heat in order to make this change of state.

Front 9

Explain why ice is less dense then liquid water

Back 9

-Due to the way the hydrogen bonds are form when liquid is in a solid state, there is more distance between the individual molecules therefore causing the ice to be less dense and float.

Front 10

Explain why ice being less dense then liquid water is essential to life on earth

Back 10

-First, when a lake freezes if ice was more dense it would sink therefore causing the lake to freeze from the bottom up and eliminating life on the bottom to the top as it travels
-Second, when the top layer freezes it actually insulates the lower portion on the water not allowing it to freeze and maintaining life

Front 11

Solution

Back 11

A homogeneous mixture formed by combining a solvent and a solution

Front 12

Solvent

Back 12

is the liquid in which the substance is dissolved

Front 13

Solute

Back 13

Substance being dissolved in the solvent

Front 14

explain "like dissolves like"

Back 14

-Due to the fact that H2O is a polar molecule and has a strong polar end, it bonds well with other polar molecules therefore allowing it to break other molecules apart

Front 15

Hydration Shell

Back 15

-Due to the face that water is very polar the H2O molecules will completely surround another molecule causing a shell of the H20, and ultimately ripping the molecule apart.

Front 16

Acid

Back 16

Substance that increases the H+ concentration in a solution

Front 17

Base

Back 17

Decreases the concentration of H+ in a solution

Front 18

Buffers ,

Back 18

Resist change in pH, minimize changes in the concentration of the H+.
Accept hydrogen ions when an acid is added, and donates when a base is added