Amorphous materials Study guides, Class notes & Summaries

GIA Colored Stones Complete Final Exam Window - ANS-An area of weak saturation in a transparent gemstone's bodycolor that usually results from the way the gem was cut. Xenocryst - ANS-A "foreign crystal" that formed in unrelated rock and was brought to the surface as a passenger in magma. A gem produced by, or derived from, a living organism is - ANSorganic Which of the following is an organic gem ? - ANS-Amber A substance that consists of atoms of only one kind is a - ANSChemic...

Wound Care-Types of Dressings Latest Update Rated A+ Primary dressing type of dressing that comes into direct contact w/ a wound Secondary dressing placed directly over primary dressing to provide additional protection, absorption, occlusion, and/or to secure primary dressing in place Hydrocolloids gel-forming polymers that adhere to the intact surrounding skin, useful for partial & full thickness wounds. Advantages: provides moist environment, enables autolytic debridement, prote...

Abiogenesis Belief that livings things may develop from lifeless matter Acid A compound that In water produces hydrogen ions, usually tastes sour, a pH less than 7 Acid rain rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water Alloy Homogenous mixture composed of two or more metals Amoeba A type of Protozoan that has no permanent shape Amorphous having no definit...

Material Properties - Answer 1. Mechanical and Physical 2. Thermal 3. Electrical 4. Optical 5. Magnetic 6. Deteriorative (chemical eg corrosion) Metals Types and Properties - Answer metallic bonding--> sea of electrons -strong, ductile -high thermal & electrical conductivity -opaque, reflective Polymers/Plastics Types & Properties - Answer Covalent bonding--> sharing of electrons -soft, ductile, low strength, low density -thermal & electrical insulators -optically transluc...

Distal correct answer: Situated away from the center of the body, or from the point of origin; specifically applied to the extremity or distant part of a limb or organ. Dorsal correct answer: Relating to the back or posterior of a structure. As opposed to the ventral, or front, of the structure. Some of the dorsal surfaces of the body are the back, buttocks, calves, and the knuckle side of the hand. Lateral correct answer: In anatomy, the side of the body or a body part that is farther ...

By what date had Kokichi Mikimoto begun culturing whole pearls - Answer 1908 Synthetic gem materials - Answer Are not minerals which of the following is an organic gem - Answer amber which of the following is amorphous - Answer amber a natural material that's made up of a mass of one or more kinds of mineral crystals is - Answer rock what group does alamandine belong to - Answer garnet A gem produced by, or derived from, a living organism is - Answer organic which of the following is a ...

A natural, inorganic substance with a characteristic chemical composition and usually characteristic crystal structure is a(n) - mineral. A substance that consists of atoms of only one kind is a - chemical element. Which of the following is an organic gem? - amber. Many colored stones are mined by - independent miners using small-scale mining methods. Most gems are A. rocks. B. organic. C. minerals. D. synthetic. - minerals. A broad gem category based on chemical composition and crysta...

1 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. b 3 β-Carotene is the precursor of: a. retinol. b. thiamine. c. calciferol...

A substance in which the atoms or molecules are free to move relative to one another. It always assumes the shape and volume of its container. - gas A substance in which the atoms or molecules pack closer than a gas, but are still able to freely move relative to one another. It exhibits a fixed volume, but not a fixed shape. - liquid A substance in which the atoms or molecules are fixed at a specific position. It exhibits a fixed volume and rigid shape. - solid A solid that has atoms and m...

A NIOSH study found that unprotected lightweight engineered I-joist floor assemblies fail after _____ minutes of fire exposure. Select one: A. 12 B. 6 C. 9 D. 15 - Answer- B. 6 If heated to a temperature of 1000ºF (540ºC), how far can a 100-foot (30-meter) steel beam elongate? Select one: A. 15 inches (38 mm) B. 12 inches (30 mm) C. 9 inches (23 mm) D. 6 inches (15 mm) - Answer- C. 9 inches (23 mm) The primary purpose of the __________ is to transfer the weight of the building ...