Chemistry Chapter 12 Vocab Plants

Front 1

capillary action

Back 1

attraction of the surface of a liquid to the surface of a solid

Front 2

EVAPORATION

Back 2

process by which particles escape from the surface of a nonboiling liquid and enter the gas state

Front 3

fluid

Back 3

a substance that can flow and therefore take the shape of its container

Front 4

freezing

Back 4

the physical change of a liquid into a solid by removal of heat, aka solidification

Front 5

surface tension

Back 5

force that tends to pull adjacent parts of a liquid's surface together thereby decreasing surface area to the smallest possible size

Front 6

vaporization

Back 6

process by which a liquid or solid changes to a gas

Front 7

amorphous solids

Back 7

one in which the particles are arranged randomly

Front 8

crystal

Back 8

a substance in which the particles are arranged in an orderly, geometric, repeating pattern

Front 9

crystal structure

Back 9

total three-dimensional arrangement of particles of a crystal

Front 10

crystalline solids

Back 10

most solids consist of crystals

Front 11

melting

Back 11

physical change of a solid to a liquid by the addition of heat

Front 12

melting point

Back 12

the temperature at which a solid becomes a liquid

Front 13

supercooled liquids

Back 13

are substances that retain certain liquid properties even at temperatures at which they appear solid

Front 14

unit cell

Back 14

smallest portion of a crystal lattice that shows the three dimensional pattern of the lattice

Front 15

boiling

Back 15

conversion of a liquid to a vapor within the liquid as well as at its surface. It occurs when the equilibrium vapor pressure of the liquid equals the atmospheric pressure

Front 16

boiling point

Back 16

the tempertaute at which the equilibrium vapor pressure of the liquid equals the atmospheric pressure

Front 17

condensation

Back 17

the process by which a gas changes to a liquid

Front 18

critical point

Back 18

indicates the critical temperature and criticall pressure

Front 19

lena tran

Back 19

lena tran ran and ran and kicked a can and formed a band :)

Front 20

critical pressure

Back 20

lowest pressure at which the substance can exist as a liquid at the critical temperature. The critical pressure is 217.75 atm

Front 21

critical temperature

Back 21

the temperature above which the substance cannot exist in the liquid state

Front 22

deposition

Back 22

change of state from a gas directly to a solid

Front 23

equilibrium

Back 23

a dynamic condition in which the two opposing changes occur at equal rates in a closed system

Front 24

equilibrium vapor pressure

Back 24

the pressure exerted by a vapor in equilibrium with its corresponding liquid at a given temperature

Front 25

freezing point

Back 25

temperature at which the solid and liquid are in equilibrium at 1 atm pressure

Front 26

le chatelier's principal

Back 26

when a sustem at equilibrium is distributed by application of a stress, it attains a new equilibrium position that minimizes the stress

Front 27

molar heat of fusion

Back 27

amount of heat energy required to melt one mole of solid at its melting point

Front 28

molar heat of vaporization

Back 28

amount of heat energy needed to vaporize one mole of liquid at its boiling point

Front 29

phase

Back 29

any part of a system that has uniform composition and properties

Front 30

phase diagram

Back 30

a graph of pressure versus temperature that shows the conditions under which the phases of a substance exist

Front 31

sublimation

Back 31

the change of state from a solid directly to a gas

Front 32

triple point

Back 32

indicates the temperature and pressure conditions at which the solid liquid and vapor of a substance can coexist at equilibrium

Front 33

volatile liquids

Back 33

liquids that evaportae readily