At 4oC is the greatest density of water: 0.999 kg/L
Density of a liquid is indirectly proportional to the temperature. When the temperature raises, the density of the liquid decreases. Therefor the temperature has an effect on water density.
The density of water increase from 100 oC to 4 oC (here is a maximum); after this temperature the density decrease.
A density greater than that of water (which varies with temperature).
Density: Mass/volume , so it is obious that density will changed with increase in temperature as volume is proportionaly changes with temperature so density will be decreases with increase in temperature. From this stand point we can say hot water has lower density then the water which is kept in room temperature. In 4'C water has higher density than other temperatures.
The temperature and the salinity affect water's density.
Water density depends on the temperature. See this table for density.
The maximum density of water occurs at a temperature of 4°C
At 4C density is maximum.It is measured as 1000Kg/m3.
Density is calculated from the temperature and salinity of the water.
Temperature and Salinity
The density of water increases as its temperature increases from 0 deg C to 4 deg C (the anomalous expansion phase). Above 4 deg C, the density decreases with temperature.
Sodium shouldn't sink in water at room temperature, because the density of sodium is less than the density of water. The density of sodium at room temperature is 0.968 g/cm3, whereas the density of water at room temperature is 0.998g/cm3. So technically, sodium should float in water, not sink.