do water molecules move farther apart or closer when water freezes?explain why?

Question

help pleaseeee, eexplain

Answer 1

Ice definitely expands as it freezes. Water is the most dense at 4C, otherwise all life in the streams and lakes would die and you would see lakes freezing from the bottom. If you really want to know, take a plastic bottle and fill it with water (entirely) and freeze it; the container will burst as the ice expands. The first explanation was correct...

Answer 2

Water is the only compound I know of that expands when it freezes. There may be some others I don't know about, but certainly it's a very rare property. As far as the reason for water having this unusual property, basically it has to do with the structure of the crystal that forms when the water becomes ice. You could use tinker toys to demonstrate this. When the water is liquid, the water molecules (represented by the wooden disks of the tinker toys) are close together, but can slide past each other and move around freely. When it freezes, bonds form which lock the molecules in place in a regular pattern, that stays nearly fixed (molecules can't move around). You can use the sticks of the tinker toys to represent the bonds, holding the disks in place a fixed distance (the length of the sticks) from each other. Whether the compound expands or contracts when it freezes depends on the spacing and structure of these bonds. In most compounds, the molecules end up closer together in this solid state than in the liquid state. But for water, the bonding is such that the molecules end up farther apart in the ice than in the water. By the way, the fact that water expands when it freezes means that ice is less dense than water. For this reason, it floats on the water (look at an ice cube in a glass of water). This property is very important for fish in the winter, because it means the ice forms on top of a pond and insulates the rest of the pond below, preventing it from freezing all the way through.

Answer 3

When water freezes, its density goes from about 1 g/cc to 0.9 g/cc. This means the molecules move further apart. Just this behavior makes water a very unusual compound.

The reason for this has to do with the "open" structure of ice, where the molecules align so that the hydrogen portion is aligned with the electron-rich portion of an adjacent molecule. When water becomes liquid, the molecules can slip in and out of this alignment, and water becomes more dense.

HOWEVER, this doesn't occur all at once. Liquid water has unique density behavior between 0 deg C and 4 deg C; the density increases with temperature. What is theorized to happen is that some "ice" open-structured crystalline solid is still present to a small extent in liquid water. As the temperature increases, these solid portions "melt". At 4 deg C, the density reaches a maximum point, and thereafter, the density of water decreases. Supposedly, 4 deg C is the max limit of these solid crystals.

Answer 4

They move farther apart as freezing expands water. As it turns from a liquid to a solid the molecules arrange themselves in a specific structure rather than moving freely.

Answer 5

The molecules actually move closer together when the water freezes, when the water is hot the molecules move away from each other .. The Particule theory

Answer 6

when the temperature is low the molecules become more attracted to each other and they have less energy to move around so instead they stick together and vibrate in place

when the temperature is high, the molecules have more energy to move around so they're a little less attracted to each other so its a liquid or if there's a lot of energy there's even less attraction and it becomes steam