At what temperature does water posses the greatest density? and why does ice float? ?

Question

At what temperature does water posses the greatest density? and why does ice float? ?

Answer 1

"With most everything on Earth except freshwater, the colder it gets, the more dense it becomes.

At about 4 degrees Celsius (40 Fahrenheit) water reaches its densest point. Amazingly, as water cools further, it actually becomes less dense.

So, why does ice float? Like most things that float, ice floats because it is less dense than liquid water. Ice is about 9% less dense. When ice forms, it takes up about 9% more space than it did as a liquid. Thus, a 1 liter container of ice weighs less than a 1 liter container of liquid water, and the lighter material floats to the top."

Hope this helps :)

Answer 2

As water gets hot density increases up to certain level. at 25 deg centigrade 1ml of water = 1 gm of water. Water boils at 100 deg.c. So i guess water has highest density at 99 deg. c.

Ice has less density compared to water. Lighter things go up and heavier thing go down. That's why Ice floats in water

Answer 3

Aw c**p, I used to know for sure, but it was something like 4C, and an ice cube floats because it is less dense than liquid water (buoyancy).

Answer 4

THE water has highest density at 4 dgree celcius.

When ice is formed from liquid some air gap is formed in tetragonal packing of wter therefore volume of ice increases. Thus density of ice decreases and its floats on water. Above 4 degree celcius intermolecular bond breaks and volume of liquid increases thus density decreases.