Malnutrition can affect every system in the body, depending upon the cause of the malnutrition. In mild to moderate cases of malnutrition, no symptoms or signs may be evident; however, as the condition persists, the signs and symptoms will become more pronounced.
1 The mass and size of the molecules in a liquid and how closely they are packed together determine the density of the liquid. 2  Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v.  The density of water is 1 gram per cubic centimeter.
In addition to all the molecular motions, in liquid water there is a continuous exchange of hydrogens between water molecules-about one exchange per millisecond at a neutral pH of 7.0 and more rapidly when the pH departs from neutrality. Water provides the standard for density at 1 gram/cm 3. While water may seem to be an ordinary liquid, its properties are in many ways unusual. The changes in the properties of water near its freezing point are illustrated below with sketches adapted from Debenedetti and Stanley.