Calorimetry Flashcards
Specific Heat Capacity
The amount of energy required to increase one gram of a substance by 1 degree Celsius
The Law of Conservation of Mass
The total initial mass equals to the total final mass for any physical or chemical change
System
What is being studied
Surroundings
Everything surrounding the system
Open system
Both matter and energy can enter or leave the system
Closed system
Matter cannot enter or leave the system, but energy can enter or leave
Isolated system
Matter and energy both cannot enter or leave the system
Calorimeter
A device used to measure the heat released or absorbed by a physical or chemical process taking place within in. This can be used to observe energy changes
First Law of Thermodynamics
Energy cannot be created or destroyed only transferred/transformed from one form to the other
Heat lost by system…
Heat gained by the surroundings
Second Law of Thermodynamics
Heat is transferred from one substance to the other if the two substances that are in contact have different temperatures. The system with the higher temperature will transfer energy to the system with the lower temperature to reach thermal equilibrium.
Breaking bonds in a chemical reaction…
Require energy (endothermic)
Forming bonds in a chemical reaction…
Release energy (exothermic)
Enthalpy
The total kinetic and potential energy of a chemical system
Combustion Calorimeters
Combustion calorimeters involve a calorimeter that is made out of metal and requires a shield around the reaction. The reaction also takes place out of the water.
