which is more denser?

Question

whicch is more denser, hot or cold water...why?

Answer 1

cold water

Actually water has the greatest density at 4 degrees celcius.

It is because as water cools the molecules loose kinetic energy and come closer and closer together and there is also an increase in the intermolecular forces. But below 4 degrees celcius, as water starts to freeze the hydrogen bonds push water molecules apart, hence ice is less dense then water and it floats on liquid water.

Answer 2

Water gets denser as it gets colder until it reaches 4ºC, at which point its density is maximum (1.000 g/cc). At temperatures below 4ºC it begins to expand, which explains why ice is less dense than water.

Still, generally speaking, hot water is less dense than cold water because its molecules are moving faster and therefore spread out more. Since density is a measure of mass per unit volume. a water sample whose molecules are spread out would have lower density.

Answer 3

Cold water beacuse the particles have less energy and are closer together.