Polymerization Study guides, Revision notes & Summaries

Organic Chemistry Module 8 Portage 219 TEST EXAM FINALS QUESTIONS WITH 100% VERIFIED SOLUTIONS Polymer - ANSWER large molecule made by repetitive linking of smaller units (monomers) Macromolecule - ANSWER very large molecule composed of thousands of covalently bonded atoms (ex: polymer) 1. natural (in nature) 2. synthetic (in lab) - ANSWER two ways polymers are made rubber, carbs: starch & cellulose, proteins, nucleic acids DNA, RNA - ANSWER natural polymers nylon, teflon, sty...

General Properties of Organic Compounds CORRECT ANSWER - Melt and boil at lower temperatures - As # C's and the MW increase, BP/MP increase - Flammable, unstable, especially triple bonds - Triple bonds can: Polymerize, Spontaneously react with, Oxygen, Explode. Keep triple bonds away from: Heat & Oxygen/Oxidizers - Presence of halogens increases stability - Many are water in-soluble i.e. they sink such as CCl4, MeCl2, PCBs etc - Some are polar if they contain hetero oxygen atom such as k...

1 MODULE 8 PORTAGE 219 ORGANIC CHEMISTRY EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ large molecule made by repetitive linking of smaller units (monomers) Correct Answer: Polymer very large molecule composed of thousands of covalently bonded atoms (ex: polymer) Correct Answer: Macromolecule two ways polymers are made Correct Answer: 1. natural (in nature) 2. synthetic (in lab) natural polymers Correct Answer: rubber, carbs: starch & cellulose, proteins, nu...

Degree of polymerization: - ANSWERnumber of structural units in the chain Homopolymer - ANSWERpolymer structure contains same repeating unit Heteropolymer - ANSWERpolymer structure contains different repeating units Copolymer - ANSWERa polymer derived from more than one species of monomer All heteropolymers are copolymers but the reverse is not true: JUSTIFY!! - ANSWERB/c copolymers can still have single repeating unit (like PET, PC) Number average molecular weight (Mn) - ANSWERMn...

PCD Spring 2024 Exam 1 Indications of RBC Caries lesions (small to moderate) Esthetics (tooth color) Conservative (outline, shallow, round) Replacements of composites (questionable) Advantages of RBC Esthetics Conservative Adhesion to tooth structure Low thermal conductivity Elimination of galvanic issues Alternative to amalgam? What is necessary in amalgam preps? 90 degree CSM Reverse curve Adequate depth Buccal/lingual convergence Rounded internal line angles Retention for...

is defined as a mixture of two or more metalsAnswer - alloy A liquid with high viscosity flow easily and effective in setting a surfaceAnswer - Does not; is not Dental restoration materials that are applied, while pliable, to a tooth or teeth and can be adopted, carved and finished are classified asAnswer - Direct restoration Is added to dental amalgam alloy powder for strengthAnswer - Zinc The resin matrix component of composite is dimethacrylate, a fluid-like material also refe...

NBDHE Review Questions and Answers What is a benefit of resin-based sealants? A.) Fluoride is released from material to inhibit decay B.) When placed correctly, retention is excellent C.) Bond strength is improved in a moist environment D.) No polymerization shrinkage occurs B.) When placed correctly, retention is excellent Which is the most common desensitizing agent found in over-the-counter dentifrices? A.) Potassium B.) Glutaraldehyde C.) Hydrogen Peroxide D.) Triclosan ...

AAMI Chemistry for Embalmers Unit 8 Questions & Answers Accurate 100% Shelf Life - ANSWERthe _________ of embalming fluid refers to the length of time the fluid maintains its functionality before it is used. Temperature, Time, pH, Light - ANSWERwhat are 4 factors that affect the shelf life of embalming chemicals? Elevated - ANSWER________ temperatures accelerate polymerization of formaldehyde into paraformaldehyde, a solid that precipitates out of the solution. This has an overall effect o...

What are the two common staining methods for nucleic acid in histology? CORRECT ANSWER-1. Feulgen Reaction 2. Methyl Green-Pyronin Method (DNA/RNA) Feulgen Reaction tests for what? CORRECT ANSWER-DNA What does the Schiff reagent bind to in the Feulgen Reaction? CORRECT ANSWER-Aldehyde group created by the hydrolysis of DNA Why can't we use the Bouin fixative on tissues being tested with Feulgen? CORRECT ANSWER-Bouin hydrolyzes tissues In Feulgen reactions, what happens when the hyd...

hemoglobinopathy - ️️genetic mutation in the genes that affect hemoglobin synthesis, leading to a diseased hemoglobin molecule qualitative hemoglobinopathy - ️️gene mutation leads to altered amino acid sequence in the hemoglobin molecule, affecting the structure and function of the hemoglobin -amino acids with different charges and biochemical characteristics leads to dysfunctional and unstable hemolgobin -e.g. sickle cell disease, hemoglobin C disease, etc. quantitative hemoglobi...