Latent heat & fusion/fission Flashcards
The energy in an object’s potential store comes from…
the potential energy stored in the bonds between particles.
change in internal energy =mass×______________________×temperature change
specific heat capacity
E =
mcΔT
specific heat capacity=
change in internal energy/
mass (kg) x maximum temperature rise
thermal capacity=mass×______________________
specific heat capacity
What are the units of thermal capacity?
J/C
______________________= change in internal energy/
(mass×maximum temperature rise)
specific heat capacity
If you pour hot water into Leslie’s cube, _____________will emit more infra-red radiation than the other sides.
the matte (dull) black side
The infra-red radiation emitted is measured using a___________.
thermopile (a sensitive thermometer).
How can you detect latent heat?
use a joulemeter and measuring the energy supplied to change state
What is the energy that is transferred to a substance without the substance’s temperature changing called?
latent heat
_____ of the alpha particles passed straight through the foil
Most
When atoms emit electromagnetic radiation, …
electrons can drop to a lower energy level, closer to the nucleus.
When atoms absorb electromagnetic radiation, …
electrons move to a higher energy level further away from the nucleus.
Each electron shell has a
different energy level.
