Theory T.5 Flashcards
(23 cards)
How is name the study of heat,work and temperaturo, that is also the study of the energy transfer?
Thermodynamics
How do we measure the temperature?
thermometer
Types of thermometer?
- Exoansión
- Metal or semiconductor
- Thermocouple
The thermometer is base on a…
scale reference
Scales?
- Farenheit
- Celsius
- SI: KELVIN
Heat is the process through which…
thermal energy is transformed as a funtion of a temperature difference.
Temperature is the propertie of a…
body
When the pressure, volume and temperature are constant the system have reach…
Thermodynamic equilibrium
Pinciple 0
An isoleted system will always evolve towards thermodynamic equillibrium.
James Joule’s said that the work of a weight falling is converted into…
heat.
Signed criteria of heat.
+ If it’s absorbed (gets into system)
- If it’s transferred (gets out the system)
Signed criteria of work
+ If it’s done by the system
- If it’s done over the system
What is the magnitude that represent the amount of heat require to increase 1ºC the temperature of 1 g of a given substance?
Specific heat (ce)
What is a Isochoric system?
When the volume is constant
What is a Isobaric system?
When the pressure is constant
The heat of transformation depends on..
pressure
If it is low pressure the boiling point…
decrease
What is the triple point of water?
What a liquid is solid, gass and water at the same time it is in a stable equillibrium.
Variation in the state change points:
- SUPERCOOLING - Remains liquid below FP
- SUPERHEATING - Remains liquid beyond BP
Processes of heat propagation?
- Conduction
- Convection
- Radiation
How is name the ability of the molecules of the material to with the vibration transfer that vibration?
Conduction
How is name the fluid flow caused by heat transfer. The warm molecules release heat (conduction) to colder ones decreasing their temperature and moving them back to the ground?
Convection
How is name the heat is transfer by means of electromagnetic waves moving at the speed of light?
Radiation
