Question

mary and ron are discussing the properties of water. mary says that when water freezes, it becomes less dense than liquid water. ron says it becomes more dense. who is correct and why? ron, because ice molecules are smaller than liquid water molecules ron, because ice sinks in liquid water mary, because ice molecules are larger than liquid water molecules mary, because lakes and ponds freeze at the bottom first

Explanation:

When water freezes into ice, hydrogen - bonding causes the water molecules to form a more open, hexagonal lattice structure. This increases the volume of the ice for the same mass of water, making ice less dense than liquid water. Ice floats on liquid water, which is why lakes and ponds freeze from the top down.

Answer:

Mary, because ice floats on liquid water indicating it is less dense.