Forms from lakes & oceans with only one type of molecule in it
Sunlight provides energy for lakes & ocean water to evaporate & form minerals
Magma provides energy for underground water to evaporate & form minerals
Melted material cools slowly and larger crystals form
Only one type of molecule is found in the melted material
Forms from lava containing only one type of molecule
Melted material cools quickly and smaller crystals form
One type of molecule is dissolved in water
