Fe by mass. The gram is defined to be the mass of 1 cm -3 of liquid water at 4 C at atmospheric pressure. The basic unit of length in the SI system is the meter. A liter is slightly larger than a quart. A cubic centimeter and a milliliter are the same volume.
Pure water has a very low electrical conductivity.
The density of liquid water is slightly higher than that of solid water. Denatured alcohol is ethyl alcohol to which various agents have been added to render it unfit for human consumption. Water is a compound. Steel is a homogeneous mixture. I want to measure out 50 grams of liquid methanol from a bottle on the shelf.