unit 2 (section 2.1) Flashcards
the capacity to do some kind of work, such as moving an object, forming a new compound, or generating light. No matter how energy is defined, it is always involved when there is a change in matter
Energy
the change of a substance from a liquid to a gas
Evaporation
describes a process in which heat is absorbed from the environment. From system to surroundings
Endothermic
Describes a process in which a system releases heat into the environment. From surroundings to system
Exothermic
The law that states that energy cannot be created or destroyed but can be changed from one form to another
Law of Conservation of Energy
all of the components being studied at any given time during an energy transfer.
System
everything outside the system during an energy transfer.
Surroundings
the energy transferred between objects that are at different temperatures; energy is always transferred from higher-temperature objects to lower-temperature objects until thermal equilibrium is reached
Heat
the energy that an object possess because of its motion
Kinetic Energy
a measure of how hot or cold something is. Specifically, the amount of kinetic energy of the particles.
Temperature
is the SI unit of measurement for temperature in chemistry
Kelvin
the quantity of heat required to raise the unit mass of a homogenous material 1k or 1 degrees celsius in a specified way given constant pressure and volume
Specific Heat