2b Flashcards
Energy that is expended doing something
Work
A joule (J) is used to measure what
Energy and work
A type of mechanical energy which involves energy in motion
Kinetic energy
A type of mechanical energy which involves the energy of position
Potential energy
The kinetic energy of atom sized particles as they move in random directions
Thermal energy
Occurs when charged particles/electrons move between atoms causing atoms to form and break bonds with other atoms
Chemical energy
Occurs when the nucleus of an atom breaks apart or when particles are added to or removed from a nucleus
Nuclear energy
Says energy can be neither created nor destroyed but can only change from one form to another
The law of energy conservation
Always flows from higher temperatures to lower, never the other way
Thermal energy
Is the quantity of thermal energy transferred from one object to another
Heat
_Reactions give off energy
Exothermic
_Reactions absorb energy
Endothermic
What is the standard metric system (SI) unit of measurement for temperature
Kelvin
T=formula
T=t(c)+273.15* (in K)
t(c)=formula (in *C)
t(c)=T-273.15* (in *C)
