the granite will get hot from being heated repeatedly and you will get cold from plunging into cold water. not sure why you you want to do either.
GNEISS
Gneiss
"lava"
When matter is heated it will expand
nothing happens
When solids are heated they turn into liquid
no answer
it turns different colors
I reiley don't know.
It will melt if heated hot enough.
it will take long to be heated up,