Day 2 (Jan 5) Notes Flashcards
The Kelvin scale is based upon:
Absolute Zero
Specific Heat (C)
the amount of energy that must be added to raise the temperature of a unit mass by one temperature unit.
Measured in J/kg x K (J/kg K)
Heat
(Q) the energy that flows as a result of temperature difference
Heat Change
Q= mc ΔT
(Q= Heat (Joules J) )
(m= mass (Kg) )
(c= specific heat J/ kgK)
(Δ t = Change in temp (k) )
Calorimeter
A device used to measure changes in thermal energy
Thermodynamics
the study of the properties of thermal energy and its changes
Melting point
the temperature at which substances change from a solid to a liquid.
Heat of Fusion
The amount of energy needed to melt one kilogram of a substance.
Boiling Point
the temperature at which a substance changes from a liquid to a gas.
Heat of Vaporization
The amount of thermal energy needed to vaporize one kilogram of a substance
The First Law of Thermodynamics
the total increase in the thermal energy of a system is the sum of the total work done on it and the heat added to it
The Second Law of Thermodynamics
Natural processes go in a direction that increases the total entropy of the universe
Entropy
the amount of randomness in a system. the amount of
disorder in asystem
Pyrolysis
giving off energy and creating heat within itself before it catches fire
ex. dryer fire when lint catches on fire from releasing the energy
