As the molecules go faster, they are more likely to bump straight out of the liquid and fly off to become a gas. The more molecules that bump out, the higher the vapor pressure. Now, if those molecules have big intermolecular forces like hydrogen bonding or london dispersion forces - when they bump into each other they're more likely to stick.
Often, spoon nails are a sign of iron deficiency anemia or a liver condition known as hemochromatosis, in which your body absorbs too much iron from the food you eat. Spoon nails can also be associated with heart disease and hypothyroidism.
White nails can a sign of kidney failure. There are also some serious liver conditions such as cirrhosis can also be marked by white spots appearing on nails. How to Deal with White Spots on Toenails. In most cases, the white spots should not be a major source of concern as the condition disappears on its own.