Amorphous materials Study guides, Class notes & Summaries

ENTC 206Among the different types of glass, which one is the only crystalline glass? - correct answer glass ceramic Which of the following manufacturing methods can significantly improve the mechanical strength of a ceramic product? - correct answer sintering Diamond is the hardest material known to humans. It is an excellent abrasive for making grinding wheels for machining of various materials. However, the diamond grinding wheel can NOT be used for grinding ___ material - correct answer...

ENTC 206 Test #1endurance limit - correct answer stress level that fatigue failure will not occur below hardness - correct answer measure of a material's resistance to penetration tensile test - correct answer standard testing method used to generate the stress-strain relationship creep - correct answer continued plastic deformation under a constant load and more prominently with elevated temperature; material may stretch & eventually fail at an applied stress BELOW its yield strength;...

CHEM 101-Straighterline Exam 1 Questions with Certified Solutions 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 ...

Gems derived from plants or animals are called _____________ gems. - Answer-organic _____________ threatens the existence of some of the species that jewelers, artisans, and craftspeople have used in the past to create jewelry. - Answer-extinction in _________, concern over many threatened or endangered species led to a __________ treaty called _________--The Convention on International Trade in Endangered Species of Wild Fauna and Flora. Its purpose is to protect ______________ wildlife fr...

All of the following factors are necessary for the retention of pit and fissure sealants, EXCEPT - Answer-the teeth must have had a fluoride treatment prior to application What is the main reason why a matrix band is used during the placement of a proximal restoration? - Answer-to act as the missing wall of the tooth during placement of the restoration Which of the following methods should be used to prevent medical emergencies in the dental office? - Answer-all of the above Which of the f...

ADAA Exam Questions and Answers 100% Pass All of the following factors are necessary for the retention of pit and fissure sealants, EXCEPT - Correct Answer ️️ -the teeth must have had a fluoride treatment prior to application What is the main reason why a matrix band is used during the placement of a proximal restoration? - Correct Answer ️️ -to act as the missing wall of the tooth during placement of the restoration Which of the following methods should be used to prevent medical...

A gem produced by, or derived from, a living organism is A. organic. B. synthetic. C. inorganic. D. manmade. Correct Answer A. organic. Which of the following is an organic gem? A. Jade B. Ruby C. Amber D. Tourmaline Correct Answer C. Amber A substance that consists of atoms of only one kind is a A. mineral. B. unit cell. C. gem species. D. chemical element. Correct Answer B. unit cell. A natural, inorganic substance with a characteristic chemical composition and usually characteristic ...

AUBF STUDY GUIDE |100% Correct| Question and Answer #UPDATED!!! • Volume • Color • Odor • Clarity *Ans* Physical Examination 10 chemical reactions *Ans* Chemical Examination • RBCs, WBCs, Bacterias, Crystals, etc. *Ans* Microscopic Examination Urinalysis *Ans* Its purpose is to detect and to identify insoluble materials present in the urine Noted on the report form. *Ans* If obtaining a 12-mL specimen is not possible, as with pediatric patients, the volume of the specimen use...

Chapter 03: Physical and Mechanical Properties of Dental Materials MULTIPLE CHOICE 1. Which type of bond occurs when two atoms share electrons in their outer shell, creating full shells for both? a. Ionic bond b. Covalent bond c. Metallic bond d. Hydrogen bond ANS: B Covalent bonds occur when two atoms share electrons in their outer shell, creating full shells for both. Covalent bonds are very strong. Diamond is a good example of a strong covalent bond; it is hard and has a high...