A material is brittle if, when subjected to stress, it breaks without significant deformation (strain). Brittle materials absorb relatively little energy prior to fracture, even those of high strength.Breaking is often accompanied by a snapping sound.any steels become brittle at low temperatures (see ductile-brittle transition temperature), depending on their composition and processing. When used in materials science, it is generally applied to materials that fail when there is little or no evidence of plastic deformation before failure.
Denaturation. Definition. noun. (1) A process in which the folding structure of a protein is altered due to exposure to certain chemical or physical factors (e.g. heat, acid, solvents, etc.), causing the protein to become biologically inactive.
1 Actually, the digestion of dietary protein begins in cooking, which DENATURES proteins.DENATURED proteins are then broken down more easily by digestive enzymes. 2  The protein digesting enzyme pepsin has a pH optimum that is adapted to the normal very low pH of the stomach (a pH of less than 2).