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Thermodynamics mindmap
Descrição
Mapa Mental sobre Thermodynamics mindmap, criado por Ben Ennifer em 02-06-2017.
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a level
Mapa Mental por
Ben Ennifer
, atualizado more than 1 year ago
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Criado por
Ben Ennifer
quase 7 anos atrás
48
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Resumo de Recurso
Thermodynamics mindmap
Anexos:
Thermodynamics Flash Cards
Heat and temperature
Temperature
Absolute zero
0K or -273.15 celcius
Theorhetical temperature where an ideal gas would have zero volume
A measure of kinetic energy in a substance
kinetic theory
the idea that microscopic movments of particles will reflect the microscopic movments of the substance as a whole
Temperature scales
Fixed points
fairly constant points such as the boilind and freezing point of water that can be used to make a tempreature scale
Celsius scale
Kelvin scale
degrees same size as 1 celsius but starting a absolute zero
fixed points at the boiling and freezing points of water, 100 and 0 respectivly
Internal Energy
Maxwell-Boltzmann distribution
no molecules have no energy
only some molecules have high energy
there is no maximum value for energy
area under the graph represents the total energy of the system
A mathematical model describing the distributions of energies at a given temperature
rms speed
root of the average sum of the squared speeds
√(∑v^2 )/n)
<c^2>
modal speed
most common speed, ie the peak of the graph
average speed
sum of speeds over number of speeds
molecular kinetics
Average kinetic energy of gas molecules is proportional to its absolute temperture
1/2 m<c^2> = 3/2 kT
Where k = 1.38 x 10^-23 Jk^-1
the sum of kinetic and potential energies of all the molecules in a substance
Heat Transfer
Specific heat capacity
A property of a material that describes the energy required to raise 1 kg of a substance 1K
∆E=mc∆T
Specific latent heat
The energy required to change the state of 1 kg of a substance at a constant temperature
∆E=L∆m
once a solid has reached its melting point it requires additional energy to change its phase
Black body radiators
will perfectly absorb all radiation that lands on it
therefor will emit EM radiation at all wavlengths
Anotações:
As objects that are good absorbers of radiation are also good emitters.
Ideal Gas Behavior
Boyle's Law
P∝1/V
Charles' Law
V∝T
Pressure Law (Gay-Lussac's Law)
P∝T
pV = nRT
R = 8.31
molecules have no size
molecules are identical
collisions are perfectly elastic
molecules exert no force
enough molecules that statistics apply
random motion
for 1 mol of gas pV = NakT
Kinetic Theory Equation
Anexos:
Notes on deriving kinetic theory equation
pV= 1/3 Nm<c^2>
Anexos de mídia
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