A student is investigating changes in the states of matter. The student fills a graduated cylinder with 50 milliliters of packed snow. The graduated cylinder has a mass of 50 grams when empty and 95 grams when filled with the snow. The packed snow changes to liquid water when the snow is put in a warm room. Which statement best describes this process?
Cooling causes the snow to melt. Cooling causes the snow to freeze. Heating causes the snow to freeze. Heating causes the snow to melt.