It will mostly retain the shape it was in when it came in contact with the shape. Its internal friction is just too low to keep its own shape (unless it's frozen). Water, since it has a low viscosity, it will likely spread out all across the baking sheet. The Ideal Gas Law - The relationship between volume, pressure, temperature and quantity of a gas, including definition of gas density. Sulfur Dioxide Liquid - Thermal Properties - Density, specific heat, thermal conductivity and more. To illustrate this, imagine pouring a cup of water over a metal baking sheet. Pressure - Absolute viscosity of steam at pressure ranging 1 - 10000 psia. Specifically, it's a measure of liquid's resistance to move across a horizontal plane. It is defined as, 'the force needed by a fluid to overcome its own internal molecular friction so that the fluid will flow.' Now that we know what viscosity is, let's move on to dynamic viscosity. If you were to flip a cup of honey upside down, you might be there a while before it fully leaves the cup. So if you were to flip a cup of water upside down, the water would spill everywhere immediately. It is relatively frictionless when compared to a liquid like honey or molasses, which are both extremely viscous. Water has a very low viscosity because it flows easily and freely. Viscosity is a trait or measure of a liquid that has resistance to 'deformation' or movement when put under stress, whether that's gravity or some other force. To answer this question, it is probably easiest to first define what viscosity is.

Dynamic viscosity of air