Gesso is made from ground marble dust. Some acrylic painters besides using it for canvas surface prep will mix it with their acrylic paints. It has a sort of chalky effect and makes the painting a bit out of focus. If you have a canvas that has gesso on it, you will see it labeled either portrait or regular canvas.esso is a thick white pigment designed to cover untreated and unprimed canvas. The gesso has two purposes. The first is to cover the unprimed canvas so that the paint you apply does not bleed through the canvas.
Potassium can be solid, liquid or gas. At normal room temperature and atmospheric pressure it is a solid. Above 63.3oC it is a liquid and above 760oC it is a gas. 32 people found this useful.
Potassium in nature occurs only in ionic salts. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and reacts vigorously with water, generating sufficient heat to ignite hydrogen emitted in the reaction and burning with a lilac flame.n the Periodic table, potassium is one of seven elements in column (group) 1 (alkali metals): they all have a single valence electron in their outer electron shell, which they readily give up to create an atom with a positive charge-a cation, and combine with anions to form salts.