When water molecules expand, what do they begin to form?
milk vapor gas solid calcite matter rocks lipids
A B C D E F G H
When water molecules inside the cell freeze, they occupy a larger space.
When water molecules begin to occupy a larger space, they begin to solidify. 
When water molecules expand, what do they begin to form? (A) milk (B) vapor (C) gas (D) solid (E) calcite (F) matter (G) rocks (H) lipids