igneous
Lava
They change into, or become, a igneous rock
Volcanoes can emit lava,rocks,ash,fragments and molten rock.
Contact metamorphasism.
No. Molten rock is liquid.
a molten rock
That is correct.
Lava.
igneous rocks
There is no such thing as an "exclusive" rock. However, there are extrusive rocks. These are divisions of igneous rocks, or rocks that form from molten rock. Intrusive rocks form from molten rock that has cooled underground. They can also be called plutonic rocks. Extrusive rocks, also called volcanic rocks, form from molten rock that has formed at or above the surface.
What you call molten rock after it has erupted is lava.
Igneous rocks, which come in many different forms.