# Is water denser when frozen then when liquid?

## Is water denser when frozen then when liquid?

When water freezes, its molecules lose energy and get stuck in a lattice structure in which they are farther apart from each other than in their liquid state, thus making ice less dense than water.

### Why Liquid water is denser than ice?

Due to intermolecular hydrogen bonding, ice forms hexagonal three-dimensional crystal lattice in which almost half the space is unoccupied. When ice melts, some of the hydrogen bonds are broken and some of the empty space is occupied by water molecules. Hence, liquid water is of higher density than ice.

#### Is frozen ice heavier than liquid water?

No, water and ice do not weigh the same. For example, if we take the same volume of water and ice in the same container, water would weigh more than ice. Freezing of water into ice results in the discrete molecules of water expanding, hence occupying more space.

What is the difference between frozen water and liquid water?

Frozen water (ice) takes up more space than liquid water because it is less dense, but when the ice melts, it is the same amount of water as before although some of it may be in the form of water vapour.

Does water expand when frozen?

Water is one of the few exceptions to this behavior. When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.

## Which is more dense than water?

To compare the density of two substances like clay and water, you can compare the weight of the same “size” or volume, of each substance. As you show the animation, explain that since a piece of clay weighs more than the same amount, or volume, of water, clay is more dense than water.

### Does ice have more mass than water?

If we apply this information to the cups, the cup of water and the cup of ice have the same mass, i.e. amount of “stuff.” Because they had the same amount of “stuff,” they have the same weight. As water freezes it expands. So, ice has more volume (it takes up more space, but has less density) than water.

#### Why is it important for lakes and ponds that ice frozen water becomes less dense and floats?

And because the same mass of molecules takes up more space when frozen, ice is less dense than liquid water. In the winter, temperatures in a lake get close enough to freezing that the colder water is less dense and floats to the top.

Does water become less dense when frozen?

Ice is less dense than water This is due to ice’s density being less than liquid water’s density. Upon freezing, the density of ice decreases by about 9 percent.