Paul's science class fills an ice cube tray with water. The tray is placed in a freezer for a day. The water freezes forming ice. The tray is removed from the freezer and left on a counter for a day. What changes as the water freezes to ice and then melts back into liquid water? A) mass of the water molecules Eliminate B) number of water molecules C) volume of water in the tray D) amount of energy in the water

Question

Chemistry

Sierra Olson

18 April, 21:20

Paul's science class fills an ice cube tray with water. The tray is placed in a freezer for a day. The water freezes forming ice. The tray is removed from the freezer and left on a counter for a day. What changes as the water freezes to ice and then melts back into liquid water? A) mass of the water molecules Eliminate B) number of water molecules C) volume of water in the tray D) amount of energy in the water

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Leroy Kidd · Answer 1

Phase changes, i. e. "solid to liquid", "liquid to gas", etc are all changed in energy state.

The molecules in a solid have less energy, so they don’t move around, getting the rigid form of the ice. In The state of liquid, water molecules have enough energy to rotate around and tumble over each other.