Heat Transfer
Specific Heat
Phase Changes
Vocabulary
Laws of Thermodynamics
100
This type of heat transfer occurs between solids that are in contact with eachother
What is conduction?
100
4180J is the heat required to raise the temperature of this mass of water by 1 degree.
What is a kilogram?
100
When an object melts, it does this to its environment
What is absorb energy?
100
This term refers to the heat required to raise a kg of a substance by 1 degree.
What is Specific Heat or Specific Heat Capacity
100
This quantity is a value which measures the disorder in a system
What is Entropy
200
This is the type of heat transfer you use to cool your food by blowing on it?
What is convection?
200
This amount of heat will raise the temperature of .5kg of water by 4 degrees
What is 8360 Joules
200
This is the energy required to completely evaporate 1 kg of a liquid at its boiling point.
What is the heat of vaporization
200
This term is a measure of the average energy in an object
What is temperature?
200
This law of thermodynamics explains why heat will flow from a high temperature area to a low temperature area, but not the other way around
What is the second law of thermodynamics
300
This feature of radiation is what makes it unique compared to the other methods of heat transfer.
Radiation can occur in a vacuum or require contact?
300
If 5kg of iron is placed in 5kg of water, this material will experience the greatest temperature change due to the different specific heats of water and Iron.
What is Iron?
300
This requires more energy between Melting a kg of ice at 0C, or raising the temperature of ice by 1 degree.
What is melting Ice at 0C?
300
This device uses the first law of thermodynamics to convert thermal energy to mechanical energy
What is a heat engine?
300
The first law states that THIS is equal to the heat added minus the work done by the object
What is the thermal energy?
400
This is the change in entropy of a room where 2kg of water cool from 25C to 20C (assuming the room stays a constant 20C during this time.)
What is 153J/K
400
This is the specific heat of a material that increases its temperature by 20C when 5000J of heat are added to 2 kilograms of it.
What is 125J/kgK
400
When ice and water are mixed, the water loses its thermal energy to this value associated with melting the ice
What is heat of fusion?
400
This is the process by which a gas becomes a liquid
What is condensation?
400
The second law states this about entropy in a system
What is the fact that entropy must always be increasing?
500
Describe the ways in which a calorimeter minimizes heat loss.
What is that the lid prevents convection with the outside air, and the air chamber protects from conduction because it is a good insulator.?
500
A kilogram of iron is placed into a 10kg bucket of water. If the iron cools by 188 degrees, this will be the temperature change of the water.
What is 2 degrees?
500
.01 kg of water condenses on a 10kg block of iron. Find the change in the temperature of the iron
What is approximately 5 degrees?
500
A heat pump uses these two processes to take energy away from a cold area and transfer it to a hot area by using work.
What are condensation and evaporation?
500
What is the change in entropy for water when 1kg is evaporated from 100C liquid to 100C gas?
What is 6,060 J/K