* Ice is frozen water: In ice, water molecules are tightly packed together in a rigid, crystalline structure. They vibrate in place but don't move around much.
* Melting is a phase change: When heat is added to ice, the water molecules gain energy. This increased energy causes them to vibrate more intensely and break free from their rigid structure.
* Water molecules remain the same: The molecules themselves (H₂O) do not change their composition. They simply transition from a solid (ice) to a liquid (water) state due to the increased energy and movement.
Think of it like this: imagine building a Lego structure. The bricks (water molecules) remain the same, but the way they are arranged changes when you take the structure apart (melting).
