Internal Energy Flashcards
temperature
measure of an object’s energy
thermal energy
measure of an object’s total energy
internal energy
total energy stored in a substance, kinetic (movement) + potential (intermolecular bonds)
why is there a ‘flat section’ when states change?
no further increase in kinetic energy + intermolecular bonds break
specific latent heat
energy required to change 1kg of a substance into another state
specific latent heat fusion
between solid and liquid
specific latent heat vaporisation
between liquid and gas
as internal gas increases . . .
increased kinetic energy = expansion = increased molecule separation
pressure and temperature are . . .
proportional
pressure (Pa)
F / A
random motion
pollen randomly change direction as they hit air molecules
gas under pressure
compressed = decreased volume = increased pressure = more collisions, temperature remains constant unless too quick
