What happens when melted rocks cool?

Answer 1

When the temperature of molten rock begins to drop there is a loss of energy that

causes ions to slow down. As the ions slow down, they group together and arrange themselves into orderly crystalline structures. This process is referred to as crystallization.

As crystallization continues, these individual silicon-oxygen tetrahedrons join

with one another, and other ions, to form the basic structure of most minerals and

igneous rocks.

Answer 2

Coarse, large grained textured crystals are formed due to the slow rate of cooling.

Answer 3

Igneous rocks.