Water

Question 1

Heat Capacity

Answer 1

The amount of thermal energy needed to raise the temperature of 100g of a substance by 1°C.
- Water has a high heat capacity, meaning it takes a lot of thermal energy to increase the temperature of 100g of water by 1°C

Question 2

Cohesion

Answer 2

Intermolecular attraction of molecules of the same substance
- Water is attracted to other water molecules

Question 3

Adhesion

Answer 3

An Intermolecular attraction of molecules of different substances
- Water is attracted to molecules of other substances

Question 4

Capillary Action

Answer 4

The ability for a fluid to flow through narrow spaces without expelling energy
-Requires both cohesion and adhesion

Question 5

Homogenous Mixture

Answer 5

A mixture made up of 2 or more substances whose proportions of components are the same throughout the mixed substance
- Even distribution

Question 6

Heterogenous mixture

Answer 6

A mixture made up of 2 or more substances whose proportions of components differ throughout the mixed substance
- Uneven distribution

Question 7

Solute

Answer 7

A substance that dissolves in another substance (substance being dissolved)

Question 8

Solvent

Answer 8

A substance in which another substance dissolves (substance doing the dissolving)

Question 9

Solution

Answer 9

Stable liquid homogenous mixture with a solute dissolved in a solvent

Question 10

Suspension

Answer 10

A heterogenous mixture in which the solute is made of large, solid particles that will settle out from the solvent when left to sit for a while.

Question 11

Emulsion

Answer 11

A suspension of hydrophobic substance into an aqueous solution

Question 12

Aqueous

Answer 12

Water-based
- Containing water (usually as a solvent)

Question 13

Insoluble

Answer 13

A substance that is unable to dissolve

Question 14

Precipitate

Answer 14

Cause a substance to be deposited in a solid form from a solution
- if too much solute is added, the insoluble solute will settle out, causing precipitate

Question 15

Hydrophilic

Answer 15

Attracted to water
- Will mix with water
- Charged or polar particles

Question 16

Hydrophobic

Answer 16

Attracted to lipids
- Will not mix with water
- Uncharged or nonpolar particles

Question 17

Amphipathic

Answer 17

Has both hydrophilic and hydrophobic ends
- Mixes with water and lipids
- Can create emulsions

Question 18

Buffer

Answer 18

A substance that resists a significant change in pH because it can neutralize small amounts of added acidic or basic solutions

Question 19

Blood Falls, Antarctica has a pH of 8.7. This means…

Answer 19

It is basic and has more -OH than H+

Question 20

Basic solutions (>7) have…

Answer 20

More -OH than H+

Question 21

Acidic solutions (<7) have

Answer 21

More H+ than -OH