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Heat Transfer
Math and Calculations
Laws of Thermodynamics
Conversions
Grab Bag
100
The total amount of energy in a closed system is conserved, including heat.
What is is the Law of Conservation of Energy?
100
This is the greek symbol that means "change" in math and science.
What is delta?
100
From hot to cold
What is direction of heat transfer?
100
27 degrees Celsius in Kelvin
What is 300 Kelvin?
100
If something like a metal gets very hot in the sun, that is an indicator of this.
What is a low specific heat?
200
The heat energy required to raise the temperature of a mass of a substance a given temperature interval.
What is specific heat?
200
This is the change in temperature of an object whose initial temperature is 65 degrees and reaches a final temperature of 40 degrees.
What is -15 degrees?
200
A conductor is something that easily allows heat transfer. This is something that slows down heat transfer
What is an insulator?
200
The point at which solid and liquid reach an equilibrium point.
What is the melting or freezing point?
300
A measure of the average kinetic energy of the molecules of a material.
What is temperature?
300
This is the specific heat of liquid water.
What is 4.18 Joules/gC or 1.0 cal/gC?
300
Of the following, this has a higher specific heat capacity. Water and sand
What is water?
300
How many Joules in 12 calories.
What is 50.2 Joules?
300
According to the graph on the board, this reaction is
What is exothermic?
400
The energy transferred from one place to another by virtue of a temperature difference.
What is heat?
400
This is the amount of heat gained by an object of mass 10 g, a specific heat of 5, and a change in temperature of -10. (YOU MUST INCLUDE THE CORRECT UNIT!)
What is -500 J?
400
This type of reaction can occur spontaneously
What is an exothermic reaction?
400
There are this many food calories in 50 Joules.
What is 0.01195?
400
During a phase change from solid to liquid, rather than increasing the temperature of the reaction, the energy is used for
What is breaking bonds?
500
Another name for the law of conservation of energy, the idea that in a closed system energy loss will equal energy gain. Also, that a change in the internal energy of a closed system is equal to the amount of heat supplied to the system, minus the amount of work done by the system
What is the first law of thermodynamics?
500
If the specific heat of iron is 0.46 J/gC, THIS is the heat needed to warm 50g of iron from 20 degrees to 100 degrees Celsius.
What is 1840 Joules?
500
Burning a piece of wood is this type of reaction
What is exothermic?
500
The specific heat of an unknown metal is 3.5 J/gC. This is its specific heat capacity in cal/gC
What is 0.8365 cal/gC?
500
At the top of a hill, your car would have a high amount of this.
What is potential energy?