Chem exam 2 chapter 5 Flashcards
Thermal energy
Energy contained in a system responsible for its temperature
Temperature
the quantitative measure of hot or cold
Heat
the transfer of thermal energy between two bodies at different temperatures
exothermic process
change that releases heat
Endothermic process
A reaction or change that absorbs heat.
Calorie
The amount of energy needed to raise the degree of water by one degree Celsius
Joule
The amount of energy needed to move one Newton one meter
Heat capacity
the quantity of heat absorbed or released when exercising a temperature change.
Specific heat capacity
The heat required to raises the temperature of 1 gram of a substance by 1 degree Celsius
Calorimetry
the measurement of the amount of heat involved in a chemical/physical reaction.
system and surrounding
substances undergoing reaction/ all other matter.
Internal energy
The total of all possible kinds of energy present in a substance
Expansion work
The system pushes against the surrounding or the surrounding compresses the system.
