Is this correct?

Question

Water doesn’t have a constant density at all temperatures. At low temperatures, the density is low. The molecules don’t move much at low temperatures. At room temperature, the molecules are able to move. The density is 1.000g/cm3. At high temperatures, the molecules move quickly and freely. This causes the density to be high.

Answer 1

at low temperatures, the density is actually high.
maybe you can remember cold air sinks and hot air rises ?
cos this shows that cold stuff are denser
the rest is pretty much correct :)

but maybe you'll like to explain further by elaborating more on the gaining and losing of energy of particles due to the various temperatures.
for e.g.

at high temp, the particles gain more energy and can move faster and cause more collisions, which causes the density to be high.

hope that helps! :)

Answer 2

Not quite...At low temperatures its density is at its highest...At room temperatures, the molecules move more which forces more space between molecules which creates lower density...Ice's crystal structure has lower density than liquid water...That's why ice floats

Answer 3

You are correct in saying that water does not have a constant density at all temperatures. The density of water is greatest at 4 degees celcius. At lower temperatures than 4 degrees celcius water is less dense, and at temperatures greater than 4 degrees celcius water is less dense.

Answer 4

for the most part, yes.
But at low temperature,the density is high (think of ice) and at high temps, the density is low (water vapor) not the other way around...
(i.e. the more the molecules move, the lower the density)

Answer 5

that's pretty good but remember at low temps the density is high and at hight temps the density is low. think of ice and steam!!

Answer 6

that sounds good to me