Water

Front 1

acid

Back 1

molecule that donates hydrogen ions and increases the concentration of hydrogen ions in a solution

Front 2

adhesion

Back 2

attraction between water molecules and other molecules

Front 3

base

Back 3

molecule that donates hydroxide ions or otherwise binds excess hydrogen ions and decreases the concentration of hydrogen ions in a solution

Front 4

buffer

Back 4

substance that prevents a change in pH by absorbing or releasing hydrogen or hydroxide ions

Front 5

calorie

Back 5

amount of heat required to change the temperature of one gram of water by one degree Celsius

Front 6

capillary action

Back 6

occurs because water molecules are attracted to charges on the inner surfaces of narrow tubular structures such as glass tubes, drawing the water molecules to the sides of the tubes

Front 7

cohesion

Back 7

intermolecular forces between water molecules caused by the polar nature of water; responsible for surface tension

Front 8

dissociation

Back 8

release of an ion from a molecule such that the original molecule now consists of an ion and the charged remains of the original, such as when water dissociates into H+ and OH-

Front 9

evaporation

Back 9

separation of individual molecules from the surface of a body of water, leaves of a plant, or the skin of an organism

Front 10

evaporation

Back 10

separation of individual molecules from the surface of a body of water, leaves of a plant, or the skin of an organism

Front 11

heat of vaporization of water

Back 11

high amount of energy required for liquid water to turn into water vapor

Front 12

hydrophilic

Back 12

describes ions or polar molecules that interact well with other polar molecules such as water

Front 13

hydrophobic

Back 13

describes uncharged non-polar molecules that do not interact well with polar molecules such as water

Front 14

PH paper

Back 14

filter paper that has been treated with a natural water-soluble dye that changes its color as the pH of the environment changes so it can be used as a pH indicator

Front 15

pH scale

Back 15

scale ranging from zero to 14 that is inversely proportional to the concentration of hydrogen ions in a solution

Front 16

solvent

Back 16

substance capable of dissolving another substance

Front 17

specific heat capacity

Back 17

the amount of heat one gram of a substance must absorb or lose to change its temperature by one degree Celsius

Front 18

sphere of hydration

Back 18

when a polar water molecule surrounds charged or polar molecules thus keeping them dissolved and in solution

Front 19

surface tension

Back 19

tension at the surface of a body of liquid that prevents the molecules from separating; created by the attractive cohesive forces between the molecules of the liquid