Science Quiz / HCHS/HCMS Thermodynamics (Basic)

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Can you name the terms from thermodynamics?

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DescriptionTerm
Type of chemical used in refrigeration/volatile derivative of methane, ethane, & propane/DuPont brand name is Freon/use phased out by 1987 Montreal Protocol b/c of ozone damage
Temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor
2 systems each in thermal equilibrium with a third system are in thermal equilibrium with each other
Object used for the process of measuring the heat of chemical reactions or physical changes as well as heat capacity
Thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work/measure of disorder/measured in J/K/symbol is S
A process cannot have as its sole result the transfer of heat from a cooler to a hotter body/In any closed system the entropy of the system will either remain constant or increase
Thermodynamic process, a phase transition in which gas transforms into solid/how frost forms on a leaf or snow forms in clouds
Process in which the temperature remains constant
Change in enthalpy (energy) resulting from heating a given quantity of a substance to change its state from a solid to a liquid
Type of chemical used in refrigeration used to replace CFC's b/c the do not damage the ozone layer/do cause global warming
Branch of physics concerned with heat and temperature and their relation to energy and work/variables such as internal energy, entropy, & pressure
End point of a phase equilibrium curve at which phase boundaries vanish/liquid and gas phases of a substance have the same density, and are therefore indistinguishable
Temperature at which a solid changes to a liquid at atmospheric pressure
Process in which energy moves from surroundings to the system/reaction in which the standard change in free energy is positive, and energy is absorbed
Method of heat transfer between liquids & gases
DescriptionTerm
Energy that comes from heat/when transferred is called heat/an object contain this but cannot contain heat
Thermodynamic process in which the pressure stays constant: ΔP = 0
Transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase/occurs at temps & pressures below substance's triple pt
It is impossible to reduce any system to absolute zero in a finite series of operations/A perfectly efficient heat engine cannot be created
Energy change required to transform a substance from liquid into gas at a given pressure/often measured at boiling point/decreases w/increasing temp & vanishes at critical point
The change in energy of a system is the amount of energy added to the system minus the energy spent doing work/Law of Conservation of Energy
Method of heat transfer that does not require matter to contact/heat is transferred by means of electromagnetic waves
Thermodynamic potential that consists of the internal energy of the system (U) plus the product of pressure & volume of the system/measured in joules, BTU's, or calories
Temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium
German physicist/mathematician who first stated the 2nd Law of Thermodynamics in On the Moving Force of Heat (1850)
Process in which there is a positive flow of energy from the system to the surroundings/reaction where free energy is negative
Amount of energy flowing from 1 body to another spontaneously due to temperature difference (not work or transfer of matter)/determined using calorimetry
Amount of heat required to change a unit mass of a substance by one degree in temperature/heat capacity per unit mass/measured in J/(gram °C) or J/(kg °C)
Method of heat transfer between solids
Process of removing heat from a low-temperature reservoir and transferring it to a high-temperature reservoir/currently done using chemicals like Freon, CFC's, & HFC's

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