The amount of energy added or removed to change the state of a substance between liquid and gas with no change in temperature.
-latent heat of fusion
-latent heat of vaporization

coil wire, increase current, put iron inside the coil

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.