Terminology

=Terminology =
 * **Alloy** - a controlled mixture of two or more metals or of a metal and a nonmetal.
 * **Catalyst** - a substance that starts or speeds up a chemical reaction while undergoing no permanent change itself.
 * **Feldspar** - a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
 * **Porous -** a material containing pores through which items (liquid, air, etc.) may flow.
 * **Pulpwood** - a wood (as of aspen, hemlock, pine, or spruce) used in making pulp for paper.
 * **Pyroprocessing** - a process in which materials are subjected to high temperatures in order to bring about a chemical or physical change.
 * **Slag** - a by-product of metal purification, welding, and casting; contains dirt, scale, and impurities.
 * **Tensile strength**- amount of stress an object can take before it breaks of permanently deforms.
 * **Aldehydes-** any organic compound containing the group -CHO. Aldehydes are oxidized to carboxylic acids and take part in many addition reactions