Relative humidity. Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. It requires less water vapor to attain high relative humidity at low temperatures; more water vapour is required to attain high relative humidity in warm or hot air.
silver is the color of the element mercury silver is the color of the element mercury Silvery.
Making the world better, one answer at a time. Mercury is an element, meaning that it isn't made out of anything but mercury. For more information, check out a periodic table of the elements, Mercury is number 80 (its symbol is Hg).