Module 2 Flashcards
(22 cards)
Energy
The ability to do work.
Work
The force applied to an object times the distance that the object travels parallel to that force.
Heat
Energy that is transferred as a consequence of temperature differences.
Specific heat
The amount of heat necessary to raise the temperature of 1 gram of a substance by 1 degree Celsius.
The First Law of Thermodynamics
Energy cannot be created or destroyed. It can only change form.
Potential energy
Energy that is stored.
Kinetic energy
Energy that is in motion
Calorie (cal)
The amount of heat necessary to warm one gram of water one degree Celsius.
Joule (J)
The amount of energy required to lift a 102 gram object straight up (at a constant speed) for 1.0 meter.
1 Calorie = X calories
X = 1,000
1 calorie = X Joules
X = 4.184
In the equation q=mcΔT, what does “q” stand for?
The amount of energy absorbed or released.
In the equation q=mcΔT, what does “m” stand for?
The mass of the object.
In the equation q=mcΔT, what does “ΔT” stand for?
The change in temperature of the object.
What is the specific heat of water? (in calories and Joules)
1.000 cal/g•ºC
or
4.184 J/g•ºC
In the equation q=mcΔT, what does “c” stand for?
The specific heat of the object.
What is the “calorimetry equation”?
-qobject = qwater + qcalorimeter
ΔT= …
ΔT=Tfinal - Tinitial
What is the equation to convert Fahrenheit to Celsius?
ºC = 5/9(ºF - 32)
What is the equation to convert Celsius to Fahrenheit?
ºF = 9/5(ºC) + 32
What is the Kelvin temperature scale often called?
The absolute temperature scale.
How do you convert from Celsius to Kelvin?
K = ºC + 273.15
