Does the density of water depend upon the amount of water being measured? why?

Question

Does the density of water depend upon the amount of water being measured? why?

Answer 1

No, the denisty of any substance/liquid is always constant, no matter what the volume or mass is. Once the mass g/ volume mL is taken into consideration, the effect of the ammount of liquid given is canceled out. Thus, no matter what your sample is, the density of water will always be 1 g/mL

Answer 2

Generally no, unless you are measuring a smaller volume of water that maybe impure, the added impurities will increase the waters density, for example, sea water has slightly greater density than pure water ie denser salty water sinks.
The reason water density doesn't depend on the amount being measured is because density is a representative (proportional) value of an element or compounds mass, for example, pure water has a density of 1.0 grams/cm3 but a volume say 10 times as much will still have the same number of molecules (Avogadro's number from memory!?) in any given volume of it.

Answer 3

Yes, but the effect is too small to measure. Molecules at or near the surface are less tightly bound than molecules in the bulk and are thus farther apart on average. The surface layer is only a few nm, so the effect is very small. For a 1 E-12 L drop, the density is reduced by about 1 part in a million. If the drop is 1 E-22 L, the effect is on the order of 1%.

Answer 4

All material have a density variation depending upon temperature. Water for example is less dense at 30 degrees Farnheight than at 100 degrees Farengheight. So be precise in how you measure the water.

If you use volume measurements, then, temperature will define how much mass you have.

If you use mass measurements, then temperature will determing how much volume you have.

Answer 5

a big NO! the density of water will remain the same no matter what the amount is. the density will depend on the temperature of the water

Answer 6

Density of any substance is mass per unit vvolume.
Density of water is amount of water in a container and the volume of the container.

Answer 7

It only matters according to what is dissolved in it, such as salt. distilled water is the standard for measuring specific gravity, being assigned a specific weight of one. If I remember correctly, the manometers aboard submarines to measure their depth were marked with the specific gravity of seawater at 1.029.

Answer 8

no. b/c water will not compress. liquids do not compress