Temperature
In the United States, the most common temperature scale (and unit of measurement) is called the ________________ scale.
Fahrenheit.
______________ is thermal energy moving from a warmer object to a cooler object.
heat transfer
All matter on Earth exists in three states which are...
solids, liquids, and gases.
How many joules of heat are needed to raise the temperature of 10 g of aluminum from 22 C to 55 C, if the specific heat of aluminum is .90 j/gC?
297 J
5000 J of heat leaves the system and 2000 J of work is done on the system. What is the change in internal energy of the system?
-3000 J
The temperature scale used in most of the world, and in System International is the _________________ scale.
Celsius
Heat is transferred in three ways. Name the three ways.
conduction, convection, and radiation.
The physical change from solid to liquid, or liquid to gas etc., is called a change in the ___________________.
state of matter
To what temperature will a 50 g piece of glass raise if it absorbs 5275 J of heat and its specific heat is .50 j/gC? The initial temperature of the glass is 20 C.
231 C
A system releases 135 kJ of heat while 115 kJ of work is done on the system. Calculate the change in internal energy (in kJ).
-20 J
The temperature scale used in physics and chemistry that also determines the absolute zero, is the _________________ scale (0K!)
Kelvin
The state in which the rates of thermal energy transfer between 2 objects are equal and the objects are at the same temperature, is called thermal ______________
Equilibrium
The first law of thermodynamics is a restatement of what law?
the law of conservation of energy?
What is the Specific heat capacity of silver if 55 g of the metal absorbs 198 J of heat and the temperature rises 15 C?
.24 J/gC
4500 J of heat is added to a system and 1450 J of work is done on the system. What is the change in internal energy of the system?
5950 J
What is the temperature in Celsius, at which water freezes.
Zero Celsius
__________________ is the transfer of energy by electromagnetic waves, with infrared being the most common frequency.
Radiation
The second law state that heat flows from what to what unless work is done on a system?
hot to cold
What is the formula for heat of Fusion?
Q = mHf
In a certain process, 675 J of heat is absorbed by a system while 290 J of work is done on the system. What is the internal energy for the process?
965 J
At this temperature, no more energy can be removed from matter (3rd Law of Thermodynamics refers to this).
absolute zero.
Heat transfer through the motion of fluid due to temperature differences.
Convection
The third law states that no system can reach this.
absolute zero
What is the change in temperature of 150 g of chloroform if it absorbs 1000 joules of heat and the specific heat of chloroform is 0.96 J/gC
6.9 C
When heat flows into a closed system, its internal energy tends to _______________
Increase