Step 8Glossary
Here is a brief glossary of the terms used in the explanation:
(Of course these definitions are very simple. If you want to go deep, you will notice it becomes very complex and that there are many kinds of polymers and fluids)
Adsorption is a reversible process by which a fluid molecule is fixed onto a solid matrix, typically a surface or a porous material, in other words the molecules are fixed only in the surface of the solid. Adsorption has many industrial applications, a good example of adsorption is using charcoal for adsorb gases in gas masks.
Absorption is the drawing of a gas or liquid into the pores of a permeable solid, a example of absorption is the formation of solutions, in which a liquid diffuses into a solid forming the solution.
Borax: A salt of boric acid, it has many industrial applications
Limiting reagent (or limiting reactant) Is the reactant that is completely consumed in a chemical reaction and it determines (or limits) the amount of product formed.
Non - Newtonian fluids: A fluid whose apparent viscosity changes when you apply a shear force to them. . A Newtonian fluid has constant viscosity under shear forces. Water is a Newtonian fluid; custard is a non-Newtonian fluid.
Polymer: is a macromolecule formed by many parts that are equal (like links in chains). Its structure and properties depend on how the chains that forms it are arranged. For example, it can be solid or liquid, transparent or opaque, etc.
Polymers surround us, and are the basis of common materials in our world. There are natural polymers like cellulose as well as synthesized polymers like Nylon, Teflon, etc.
Polyvinyl acetate: A kind of polymer
Rheology: In a few words, is the study of the change in form and flow of materials. For example, Rheology would be concerned with how water behaves when you stir it or pour it.
Rheopectic fluid: A kind of Non Newtonian fluid whose apparent viscosity increases when is under a shear force.
Thixotropic fluid: A kind of Non Newtonian fluid whose apparent viscosity decreases when is under a shear force.
Viscosity: Is the resistance of a fluid to flow. For example, glycerin is more viscous than water. This means glycerin has more opposition to flow than water.
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