CP Chemistry Vocab

31 cards

Ch 11


 
  
Created Dec 7, 2006
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1
1 Calorie
 
1 kilocalorie = 1000 calories
2
1 J = 0.239 cal
 
4.184 J = 1 cal
3
C = q/ M x ?T
 
heat ( joules or calories) / mass(g) x change in temperature (?C)
4
calorie
 
the quantity of heat needed to raise the temperature of 1g of pure water 1?C
5
calorimeter
 
the isulated device used to measure the absorption or release of heat in chemical or physical...
6
calorimetry
 
the accurate and precise measurement of heat change for chemical and physical processes
7
chemical potential energy
 
energy stored within the structural units of chemical substances
8
endothermic process
 
a process that absorbs heat from the surroundings
9
energy
 
The capacity for doing work or supplying heat
10
Enthalpy (H)
 
the heat content of a system at constant pressure
11
Exothermic Process
 
a heat-dissipating process
12
heat
 
the energy that is transferred from one body to another because of a temperature difference
13
heat capacity
 
the quantity of heat required to change an object's temperature by exactly 1 ?C
14
heat of combustion
 
the heat released during a chemical reaction in which one mole of a substance is completely...
15
heat of reaction
 
the heat released or absorbed during a chemical reaction; equivalent to h, the change in enthalpy
16
Hess's law of heat summation
 
in going from a particular set of reactants to a particular set of products, the enthalpy change...
17
joule
 
the SI unit of energy; 4.184 J equals one calorie
18
law of conservation of energy
 
energy is neither created nor destroyed in an ordinary chemical or physical process
19
molar heat of condensation
 
the heat,in joules or calories, released by 1 mole of a substance as it changes from a vapor...
20
molar heat of fusion
 
the energy,in kilojoules, required to melt 1 mole of a solid
21
molar heat of solidification
 
the heat,in joules or calories, released by 1 mole of a substance as it changes from a liquid...
22
molar heat of solution
 
the heat,in joules or calories, released by 1 mole of a substance as it dissolves in water...
23
molar heat of vaporization
 
the energy, in kilojoules, required to vaporize 1 mole of a liquid
24
specific heat
 
the quantity of heat, in joules or calories, required to raise the temperature of 1 g of a...
25
standard heat of formation
 
the change in enthalpy for a reaction in which one mole of a compound is formed from its constituent...
26
surroundings
 
the remainder of the universe that is outside the system
27
system
 
any part of the universe upon which attention is focused
28
thermochemical equation
 
a chemical equation that includes the amount of heat produced or absorbed during the reaction
29
thermochemistry
 
the study of heat changes in chemical reactions
30
universe
 
the totality of all existing things
31
universe
 
the totality of all existing things

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