Impact of Chemistry [16:160:127]
|
|
- Mercy Taylor
- 7 years ago
- Views:
Transcription
1 Impact of Chemistry [16:160:127] 2. Introduction to Nanotechnology Chemistry and Chemical Biology Dept. Rutgers University KiBum Lee, Ph.D.
2 Notice There will be no case study # 3. Research Presentation (Drug delivery to brain tumor cells and Stem Cells) on next Thurs (10/13) Lecture notes will be posted on the Sakai (from the next week)
3 Review What is nanoscience? New physics, chemistry and technology Two visions of nanofabrication What is a role of Chemist? Size, Shape, Compositions, and Crystalline
4 What is nanotechnology? Nanotechnology is research and technology development at the atomic, molecular or macromolecular levels, in the length scale of approximately nm National Science Foundation 1 nanometer = 10-9 m Human hair = 50,000 nm Smallest thing seeable with the naked eye = 10,000 nm Hydrogen atom = 0.1 nm Nanoscience: the study of fundamental principles of molecules and structures with a least one dimension roughly between 1 and 100 nm (nanostructure). Nanotechnology: the application of these nanostructures into nanoscale devices
5 A Different Kind of Small At the macroscale: chemical & physical properties of materials are not size dependent As we cut a bulk of gold down to smaller pieces, the properties (gold, yellow, shiny, electrically conductive metal, melting point..) will be exactly the same until we reach the nanoscale. At nanoscale: everything will change, including color, melting points, and chemical properties Due to the nature of the interaction among the atoms Interactions are not averaged out as in bulk material Nano gold doesn t act like bulk gold
6 Surface area of NPs: a simple model
7 Science: New Tools
8 Science: New Physics
9 Science: New Chemistry
10 Science: New Biology
11 Approaches to nanoscale structures
12 What is a role of Chemistry?
13 Contents Review the previous lecture 0, 1 and 3 dim. nanomaterials Self-Assembly Monolayers (SAMs) Specific Topics in nanochemistry
14 The most-cited researchers in Chemistry
15 To find a good reference Search Engine: SciFinder Web of Science ( MEDLINE ( Impact Factors: Science, Nature, and Cell Nature*, Advanced Materials, Nano Letters JACS, Angewante Chem Other Specific Journals
16
17 Fundamental Science
18 Zero dimensional (0D) growth Terri Odom (Northwestern)
19 Arrested precipitation: general approach
20 Arrested precipitation: metallic colloids Aqueous reduction of metal salts (Ag, Au) in the presence of citrate ions Chemisorption of organic ligands for handling Distribution varies > 10% Higher temperature reduction of metal salts (Co, Ni) in the presence of stabilizing agents Metal NCs nucleate and grow until the reagent is consumed No Ostwald ripening is observed NC size is coarsely tunable by the ratio of capping groups to metal salt Schmid G Chem. Rev.92:
21 Arrested precipitation: metallic colloids Terri Odom (Northwestern)
22 Arrested precipitation: semiconducting NCs
23 One dimensional (1D) growth Y. Xia et al., Adv. Mat. 15, 353 (2003)
24 Electrodeposition scheme Porous template Silver component growth gold component growth Removal of template
25 Preparation of Anodic Aluminum Oxide template + D.C Power - Wate r in circulator Wate r out Al Electro-polishing PCA: EtOH Anodization 0.3M oxalic acid Anodization 0.3M oxalic acid Etching Chromium oxide +phosphoric acid
26 SEM image AFM image Particles Lattice mismatches
27 Titanium Oxide Nanotubes (NTs)
28 Titanium Oxide Nanotubes (NTs)
29 Titanium Oxide NanoTubes (NTs)
30
31 Electrodeposition within nanoporous membranes
32 Three dimensional (3D) nanostructures photo-induced conversion kinetic control DNA-based assembly
33 Self-Assembled Monolayers In 1946 Zisman published the preparation of a monomolecular layer by adsorption (self-assembly) of a surfactant onto a clean metal surface. J. Colloid Interface Sci.1946, 1, 513.
34 Formation of SAMs on Gold In 1983Nuzzoand Allara showed that SAMs of alkanethiolates on gold can be prepared by adsorption of di-n-alkyl disulfide from dilute solutions. J. Am. Chem. Soc.1983, 105, the most studied SAMs to date SAMs are ordered molecular assemblies formed by the adsorption of an active surfactanton a solid surface. The order in these 2D system is produced by a spontaneous chemical synthesis at the interface, as the system approaches equilibrium. proposed mechanism (still controversial): oxidative addition of the S-H bond to the gold surface, followed by a reductive elimination of the hydrogen R-S-H + Au o n R-S-Au + Au o n + 1/2H 2 on the basis of the bond energies of RS-H, H-H, and RS-Au (87, 104, and 40 kcal/mol, respectively), the net energy for adsorption of alkanethiolates on gold would be ca. 5 kcal/mol, which is exothermic. cf. J. Am. Chem. Soc.2002, 124, 1132.
35 Formation of SAMs on different substrates
36 Self-Assembled Monolayers (SAMs)
37 Self-Assembled Monolayers (SAMs)
38 Tailoring the composition of the SAM on Nanoparticles
39 SAMs on Silicon Oxide alkylchlorosilanes and alkylalkoxysilanes require hydroxylated surfaces in situ formation of polysiloxane, which is connected to surface silanol groups (-SiOH) via Si-O-Si bonds
40 SAMs on Silicon Oxide not easy to produce, mainly because of the need to carefully control the amount of water in solution incomplete monolayers are formed in the absence of water excess water results in facile polymerization in solution and polysiloxane deposition of the surface for the formation of closely packed monolayers, a moisture quantity of 0.15mg/100mL of solvent was suggested as the optimum condition temperature: the threshold temperature below which an ordered monolayer is formed. The threshold temperature is a function of the chain length (higher for octadecyl 18 o C than for tetradecyl chain 10 o C).
41 SAMs: Reactivity Issues Solvent Effect: Solvation of functional groups embedded in a monolayer and the local concentration of dissolved reagents near the surface may be different from the bulk. Steric Effect: Sterically demanding reactions or reactions requiring penetration of a reagent through a well-packed monolayer may be hindered at surfaces. On the other hand enforced favorable orientation or conformation of monolayer-embedded functional group could promote certain reactions. Electronic Effect: Functional groups adjacent to the reaction center in the monolayer may affect reactivity. Bulk vs. Monolayer pk1/2 Values
CAPITOLO III MATERIALI ASSEMBLATI E AUTOASSEMBLATI. Photonics and Biophotonics Organics Synthesis - PhoBOS
CAPITOLO III MATERIALI ASSEMBLATI E AUTOASSEMBLATI 1 Outline and motivation SA mono and multilayers on silica and silicon native oxide The chemistry of the process the effect of moisture the effect of
Chemical Synthesis. Overview. Chemical Synthesis of Nanocrystals. Self-Assembly of Nanocrystals. Example: Cu 146 Se 73 (PPh 3 ) 30
Chemical Synthesis Spontaneous organization of molecules into stable, structurally well-defined aggregates at the nanometer length scale. Overview The 1-100 nm nanoscale length is in between traditional
Nanofabrication using anodic alumina templates. IFIMUP and IN Institute of Nanoscience and Nanotechnology
Nanofabrication using anodic alumina templates João Pedro Araújo IFIMUP and IN Institute of Nanoscience and Nanotechnology Outline Template based nanofabrication Nanoporous alumina templates Template filling
Lecture 11. Etching Techniques Reading: Chapter 11. ECE 6450 - Dr. Alan Doolittle
Lecture 11 Etching Techniques Reading: Chapter 11 Etching Techniques Characterized by: 1.) Etch rate (A/minute) 2.) Selectivity: S=etch rate material 1 / etch rate material 2 is said to have a selectivity
National Science Foundation
Nanoscale Science and Engineering Education Programs at the National Science Foundation John S. (Spud) Bradley, Section Head Instructional Materials Development And Centers for Learning and Teaching, Division
Controlling Gold Nanoparticles with Atomic Precision: Synthesis and Structure Determination
Controlling Gold Nanoparticles with Atomic Precision: Synthesis and Structure Determination Huifeng Qian Department of Chemistry, Carnegie Mellon University, USA Advisor: Prof. Rongchao Jin Background
Chapter Outline. 3 Elements and Compounds. Elements and Atoms. Elements. Elements. Elements 9/4/2013
3 Elements and Compounds Chapter Outline 3.1 Elements A. Distribution of Elements Foundations of College Chemistry, 14 th Ed. Morris Hein and Susan Arena Copyright This reclining Buddha in Thailand is
Computational Nanoscience of Soft Matter
ChE/MSE 557 Computational Nanoscience of Soft Matter Fall 2006 Instructor: Professor Sharon C. Glotzer Class meets: Tues 3:00-6:00 Location: Room 3336 BD, Duderstadt Center Room 3336 AC, Duderstadt Center
Prentice Hall. Chemistry (Wilbraham) 2008, National Student Edition - South Carolina Teacher s Edition. High School. High School
Prentice Hall Chemistry (Wilbraham) 2008, National Student Edition - South Carolina Teacher s Edition High School C O R R E L A T E D T O High School C-1.1 Apply established rules for significant digits,
Study on Wet Etching of AAO Template
Study on Wet Etching of AAO Template Guofeng Hu, Haiming Zhang, Wenwen Di & Tingting Zhao School of Science, Tianjin Polytechnic University, Tianjin 300160, China E-mail: hugf2009@163.com Abstract The
Outline. Self-assembled monolayer (SAM) formation and growth. Metal nanoparticles (NP) anchoring on SAM
From functional nanostructured surfaces to innovative optical biosensors Giacomo Dacarro Dipartimento di Fisica A.Volta Dipartimento di Chimica Generale Università degli Studi di Pavia Dalla scienza dei
OPTIMIZING OF THERMAL EVAPORATION PROCESS COMPARED TO MAGNETRON SPUTTERING FOR FABRICATION OF TITANIA QUANTUM DOTS
OPTIMIZING OF THERMAL EVAPORATION PROCESS COMPARED TO MAGNETRON SPUTTERING FOR FABRICATION OF TITANIA QUANTUM DOTS Vojtěch SVATOŠ 1, Jana DRBOHLAVOVÁ 1, Marian MÁRIK 1, Jan PEKÁREK 1, Jana CHOMOCKÁ 1,
Adsorption at Surfaces
Adsorption at Surfaces Adsorption is the accumulation of particles (adsorbate) at a surface (adsorbent or substrate). The reverse process is called desorption. fractional surface coverage: θ = Number of
Nanoscience Course Descriptions
Nanoscience Course Descriptions NANO*1000 Introduction to Nanoscience This course introduces students to the emerging field of nanoscience. Its representation in popular culture and journalism will be
Supporting Information
Supporting Information Simple and Rapid Synthesis of Ultrathin Gold Nanowires, Their Self-Assembly and Application in Surface-Enhanced Raman Scattering Huajun Feng, a Yanmei Yang, a Yumeng You, b Gongping
JOURNAL INTEGRATED CIRCUITS AND SYSTEMS, VOL 1, NO. 3, JULY 2006. 39
JOURNAL INTEGRATED CIRCUITS AND SYSTEMS, VOL 1, NO. 3, JULY 2006. 39 Self-Assembled Polystyrene Micro-Spheres Applied for Photonic Crystals and Templates Fabrication Daniel S. Raimundo 1, Francisco J.
Usage of Carbon Nanotubes in Scanning Probe Microscopes as Probe. Keywords: Carbon Nanotube, Scanning Probe Microscope
International Journal of Arts and Sciences 3(1): 18-26 (2009) CD-ROM. ISSN: 1944-6934 InternationalJournal.org Usage of Carbon Nanotubes in Scanning Probe Microscopes as Probe Bedri Onur Kucukyildirim,
SYNTHESIS AND ANALYSIS OF SILVER/GOLD NANOPARTICLES
SYNTHESIS AND ANALYSIS OF SILVER/GOLD NANOPARTICLES Background Shelby Hatch and George Schatz Northwestern University, Evanston, IL 60208 All physical and chemical properties are size dependent, and the
The Empirical Formula of a Compound
The Empirical Formula of a Compound Lab #5 Introduction A look at the mass relationships in chemistry reveals little order or sense. The ratio of the masses of the elements in a compound, while constant,
STUDENT BACKGROUND READING FOR EXPERIMENT C: COLORIMETRIC GOLD NANOSENSOR
STUDENT BACKGROUND READING FOR EXPERIMENT C: In this experiment you will synthesize and test a plasmonic colorimetric nanosensor made of nanoparticles of gold. Here we provide you with some background
CS257 Introduction to Nanocomputing
CS257 Introduction to Nanocomputing Overview of Crossbar-Based Computing John E Savage Overview Intro to NW growth methods Chemical vapor deposition and fluidic assembly Nano imprinting Nano stamping Four
CHAPTER 3: MATTER. Active Learning Questions: 1-6, 9, 13-14; End-of-Chapter Questions: 1-18, 20, 24-32, 38-42, 44, 49-52, 55-56, 61-64
CHAPTER 3: MATTER Active Learning Questions: 1-6, 9, 13-14; End-of-Chapter Questions: 1-18, 20, 24-32, 38-42, 44, 49-52, 55-56, 61-64 3.1 MATTER Matter: Anything that has mass and occupies volume We study
Onur Yavuzçetin Fakultät für Naturwissenschaften Department Physik ATOMIC SCALE NANOWIRES
Onur Yavuzçetin Fakultät für Naturwissenschaften Department Physik ATOMIC SCALE NANOWIRES 1 What is a Nanowire? It is a nanostructure with the diameter of the order of a nanometer (10 9 meters) which is
Size effects. Lecture 6 OUTLINE
Size effects 1 MTX9100 Nanomaterials Lecture 6 OUTLINE -Why does size influence the material s properties? -How does size influence the material s performance? -Why are properties of nanoscale objects
Extension of COSMO-RS to interfacial phenomena
Extension of COSMO-RS to interfacial phenomena Martin P. Andersson et al. Nano-Science Center Department of Chemistry University of Copenhagen Denmark Presentation at the 4th COSMO-RS symposium Mar 2015
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING
CHEMISTRY STANDARDS BASED RUBRIC ATOMIC STRUCTURE AND BONDING Essential Standard: STUDENTS WILL UNDERSTAND THAT THE PROPERTIES OF MATTER AND THEIR INTERACTIONS ARE A CONSEQUENCE OF THE STRUCTURE OF MATTER,
Silica Over-Saturation, Precipitation, Prevention and Remediation In Hot Water Systems Edited By Dave Peairs, Cal Water, Technical Director
Silica Over-Saturation, Precipitation, Prevention and Remediation In Hot Water Systems Edited By Dave Peairs, Cal Water, Technical Director Background Silica scaling becomes a problem when any hot water
CHEMISTRY II FINAL EXAM REVIEW
Name Period CHEMISTRY II FINAL EXAM REVIEW Final Exam: approximately 75 multiple choice questions Ch 12: Stoichiometry Ch 5 & 6: Electron Configurations & Periodic Properties Ch 7 & 8: Bonding Ch 14: Gas
Corrosion Inhibitors in Antifreeze Coolants
44th International Petroleum Conference, Bratislava, Slovak Republic, September 21-22, 2009 Corrosion Inhibitors in Antifreeze Coolants Bratislava 2009. 09. 22. Bálint Szilágyi Product development engineer
Introducing Nanoscience to High School Students
Introducing Nanoscience to High School Students www.crann.tcd.ie As a Partner of Trinity College. NEATEC is authorized to use and distribute this module to Non-Profit Organizations. This project is sponsored
Introduction to VLSI Fabrication Technologies. Emanuele Baravelli
Introduction to VLSI Fabrication Technologies Emanuele Baravelli 27/09/2005 Organization Materials Used in VLSI Fabrication VLSI Fabrication Technologies Overview of Fabrication Methods Device simulation
Chemistry B11 Chapter 4 Chemical reactions
Chemistry B11 Chapter 4 Chemical reactions Chemical reactions are classified into five groups: A + B AB Synthesis reactions (Combination) H + O H O AB A + B Decomposition reactions (Analysis) NaCl Na +Cl
Magnetic Data Storage and Nanoparticles Ernie Chang
Magnetic Data Storage and Nanoparticles Ernie Chang Introduction Magnetic storage, specifically in hard drives has advanced significantly since the first disk drive built in 1956 [1]. Interestingly enough,
B) atomic number C) both the solid and the liquid phase D) Au C) Sn, Si, C A) metal C) O, S, Se C) In D) tin D) methane D) bismuth B) Group 2 metal
1. The elements on the Periodic Table are arranged in order of increasing A) atomic mass B) atomic number C) molar mass D) oxidation number 2. Which list of elements consists of a metal, a metalloid, and
Graphene a material for the future
Graphene a material for the future by Olav Thorsen What is graphene? What is graphene? Simply put, it is a thin layer of pure carbon What is graphene? Simply put, it is a thin layer of pure carbon It has
Chapter 4: Structure and Properties of Ionic and Covalent Compounds
Chapter 4: Structure and Properties of Ionic and Covalent Compounds 4.1 Chemical Bonding o Chemical Bond - the force of attraction between any two atoms in a compound. o Interactions involving valence
MOLARITY = (moles solute) / (vol.solution in liter units)
CHEM 101/105 Stoichiometry, as applied to Aqueous Solutions containing Ionic Solutes Lect-05 MOLES - a quantity of substance. Quantities of substances can be expressed as masses, as numbers, or as moles.
General Chemistry I (FC, 09-10) Lab #3: The Empirical Formula of a Compound. Introduction
General Chemistry I (FC, 09-10) Introduction A look at the mass relationships in chemistry reveals little order or sense. The ratio of the masses of the elements in a compound, while constant, does not
Nanoparticle Deposition on Packaging Materials by the Liquid Flame Spray
Nanoparticle Deposition on Packaging Materials by the Liquid Flame Spray Hannu Teisala a, Mikko Tuominen a, Mikko Aromaa b, Jyrki M. Mäkelä b, Milena Stepien c, Jarkko J. Saarinen c, Martti Toivakka c
Physical and Chemical Properties of Matter
Physical and Chemical Properties of Matter What is matter? Anything that has mass and takes up space Chemical or Physical Property? Physical properties of matter: characteristics that can be observed or
NANOCOMPOSIX'S GUIDE TO ICP-MS MEASUREMENT
NANOCOMPOSIX'S GUIDE TO ICP-MS MEASUREMENT AND ANALYSIS SEPTEMBER 2012, V 1.1 4878 RONSON CT STE K SAN DIEGO, CA 92111 858-565 - 4227 NANOCOMPOSIX.COM Note to the Reader: We at nanocomposix have published
EXPERIMENT 7 Reaction Stoichiometry and Percent Yield
EXPERIMENT 7 Reaction Stoichiometry and Percent Yield INTRODUCTION Stoichiometry calculations are about calculating the amounts of substances that react and form in a chemical reaction. The word stoichiometry
List the 3 main types of subatomic particles and indicate the mass and electrical charge of each.
Basic Chemistry Why do we study chemistry in a biology course? All living organisms are composed of chemicals. To understand life, we must understand the structure, function, and properties of the chemicals
Matter, Materials, Crystal Structure and Bonding. Chris J. Pickard
Matter, Materials, Crystal Structure and Bonding Chris J. Pickard Why should a theorist care? Where the atoms are determines what they do Where the atoms can be determines what we can do Overview of Structure
A metal-free polymeric photocatalyst for hydrogen production from water under visible light
A metal-free polymeric photocatalyst for hydrogen production from water under visible light Xinchen Wang, Kazuhiko Maeda, Arne Thomas, Kazuhiro Takanabe, Gang Xin, Johan M. Carlsson, Kazunari Domen, Markus
Nano Architectures for Carbon Nanotube Circuits: Design, Analysis, and Experimental Attempts Extended Abstract
Nano Architectures for Carbon Nanotube Circuits: Design, Analysis, and Experimental Attempts Extended Abstract Eugen Czeizler, Tuomo Lempiäinen, Pekka Orponen Department of Information and Computer Science,
Chem101: General Chemistry Lecture 9 Acids and Bases
: General Chemistry Lecture 9 Acids and Bases I. Introduction A. In chemistry, and particularly biochemistry, water is the most common solvent 1. In studying acids and bases we are going to see that water
Formation of solids from solutions and melts
Formation of solids from solutions and melts Solids from a liquid phase. 1. The liquid has the same composition as the solid. Formed from the melt without any chemical transformation. Crystallization and
Discovering Electrochemical Cells
Discovering Electrochemical Cells Part I Electrolytic Cells Many important industrial processes PGCC CHM 102 Cell Construction e e power conductive medium What chemical species would be present in a vessel
NANOTECHNOLOGY BACKGROUND
NANOTECHNOLOGY BACKGROUND Introduction and Overview Nanotechnology is defined as the study of the fundamental laws and theories of atoms and structures that have critical dimensions between 1 and 100 nanometers.
Discovering the Properties of Magic Sand
NNIN Nanotechnology Education Teacher s Preparatory Guide Discovering the Properties of Magic Sand Purpose Explore the properties of molecular bonding Introduce students to the engineering of hydrophobic
Electrophoretic Gold Nanoparticles Depostion On Carbon Nanotubes For NO 2 Sensors
European Network on New Sensing Technologies for Air Pollution Control and Environmental Sustainability - EuNetAir COST Action TD1105 2 nd International Workshop EuNetAir on New Sensing Technologies for
Question Bank Electrolysis
Question Bank Electrolysis 1. (a) What do you understand by the terms (i) electrolytes (ii) non-electrolytes? (b) Arrange electrolytes and non-electrolytes from the following substances (i) sugar solution
APPENDIX B: EXERCISES
BUILDING CHEMISTRY LABORATORY SESSIONS APPENDIX B: EXERCISES Molecular mass, the mole, and mass percent Relative atomic and molecular mass Relative atomic mass (A r ) is a constant that expresses the ratio
Honors Chemistry: Unit 6 Test Stoichiometry PRACTICE TEST ANSWER KEY Page 1. A chemical equation. (C-4.4)
Honors Chemistry: Unit 6 Test Stoichiometry PRACTICE TEST ANSWER KEY Page 1 1. 2. 3. 4. 5. 6. Question What is a symbolic representation of a chemical reaction? What 3 things (values) is a mole of a chemical
2. Write the chemical formula(s) of the product(s) and balance the following spontaneous reactions.
1. Using the Activity Series on the Useful Information pages of the exam write the chemical formula(s) of the product(s) and balance the following reactions. Identify all products phases as either (g)as,
EXPERIMENT 8: Activity Series (Single Displacement Reactions)
EPERIMENT 8: Activity Series (Single Displacement Reactions) PURPOSE a) Reactions of metals with acids and salt solutions b) Determine the activity of metals c) Write a balanced molecular equation, complete
Part B 2. Allow a total of 15 credits for this part. The student must answer all questions in this part.
Part B 2 Allow a total of 15 credits for this part. The student must answer all questions in this part. 51 [1] Allow 1 credit for 3 Mg(s) N 2 (g) Mg 3 N 2 (s). Allow credit even if the coefficient 1 is
Chemical Engineering. Ohio Academic Content Standards Grade. Lesson Summary:
Chemical Engineering Lesson Summary: Chemical engineering involves the design, construction, and operation of plants and machinery to make products such as acids, dyes, drugs, plastics, and synthetic materials.
The Water Race: Hydrophobic & Hydrophilic Surfaces
tudent Worksheet The Water Race: Hydrophobic & Hydrophilic urfaces In the water molecule, the hydrogen atoms tend to have a slightly positive charge and the oxygen atoms a slightly negative charge. Water
Basic Properties and Application of Auto Enamels
Basic Properties and Application of Auto Enamels Composition of Ceramic Automotive Glass Enamels Ceramic automotive glass colours are glass enamels that fire on to the glass during the bending process
Joshua Blose, Ph.D., Biochemistry
Current Research Joshua Blose, Ph.D., Biochemistry Our research group is interested in learning more about how the cellular environment influences the stability and structure of nucleic acids such as DNA
Demonstration of sub-4 nm nanoimprint lithography using a template fabricated by helium ion beam lithography
Demonstration of sub-4 nm nanoimprint lithography using a template fabricated by helium ion beam lithography Wen-Di Li*, Wei Wu** and R. Stanley Williams Hewlett-Packard Labs *Current address: University
Name Date Class CHAPTER 1 REVIEW. Answer the following questions in the space provided.
CHAPTER 1 REVIEW Matter and Change SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. a Technological development of a chemical product often (a) lags behind basic research
Crevice Corrosion on Stainless Steel Propeller Shafts
Crevice Corrosion on Stainless Steel Propeller Shafts A Quick Summary: What is it? How to Prevent it. How to Repair it. Stainless steel propeller shafts and running gear are subject to pitting & crevice
hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version 1.0
hij GCSE Additional Science Chemistry 2 Higher Tier Chemistry 2H SPECIMEN MARK SCHEME Version.0 Copyright 20 AQA and its licensors. All rights reserved. The Assessment and Qualifications Alliance (AQA)
Ikerbasque Research Professor, Centre for Cooperative Research in Biomaterials, CIC. biomagune, 20009, San Sebastián, Spain
Luis M. Liz- Marzán Ikerbasque Research Professor, Centre for Cooperative Research in Biomaterials, CIC. biomagune, 20009, San Sebastián, Spain Current Position: L UIS M. LIZ- MARZÁN Education: Bachelor
Chapter 5 Classification of Organic Compounds by Solubility
Chapter 5 Classification of Organic Compounds by Solubility Deductions based upon interpretation of simple solubility tests can be extremely useful in organic structure determination. Both solubility and
Chemistry Assessment Unit AS 1
Centre Number 71 Candidate Number ADVANCED SUBSIDIARY (AS) General Certificate of Education January 2011 Chemistry Assessment Unit AS 1 assessing Basic Concepts in Physical and Inorganic Chemistry [AC111]
Chemical Equations & Stoichiometry
Chemical Equations & Stoichiometry Chapter Goals Balance equations for simple chemical reactions. Perform stoichiometry calculations using balanced chemical equations. Understand the meaning of the term
Chem 1721 Brief Notes: Chapter 19
Chem 1721 Brief Notes: Chapter 19 Chapter 19: Electrochemistry Consider the same redox reaction set up 2 different ways: Cu metal in a solution of AgNO 3 Cu Cu salt bridge electrically conducting wire
Organic Molecules of Life - Exercise 2
Organic Molecules of Life - Exercise 2 Objectives -Know the difference between a reducing sugar and a non-reducing sugar. -Distinguish Monosaccharides from Disaccharides and Polysaccharides -Understand
Adhesive Bonding of Natural Stone
Adhesive Bonding of Natural Stone Section I: Basics of Stone Adhesion Adhesive Theory There are many theories concerning the forces that are at work in forming an adhesive bond between two (2) different
DNA Assembly and Enzymatic Cutting in Solutions: A Gold Nanoparticle Based SERS Detection Strategy
Supporting Information DNA Assembly and Enzymatic Cutting in Solutions: A Gold Nanoparticle Based SERS Detection Strategy Elizabeth Crew 1, Hong Yan 1, Liqin Lin 1, Jun Yin 1, Zakiya Skeete 1, Timur Kotlyar
Chapter 8 - Chemical Equations and Reactions
Chapter 8 - Chemical Equations and Reactions 8-1 Describing Chemical Reactions I. Introduction A. Reactants 1. Original substances entering into a chemical rxn B. Products 1. The resulting substances from
Chem 31 Fall 2002. Chapter 3. Stoichiometry: Calculations with Chemical Formulas and Equations. Writing and Balancing Chemical Equations
Chem 31 Fall 2002 Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations Writing and Balancing Chemical Equations 1. Write Equation in Words -you cannot write an equation unless you
Explain the ionic bonds, covalent bonds and metallic bonds and give one example for each type of bonds.
Problem 1 Explain the ionic bonds, covalent bonds and metallic bonds and give one example for each type of bonds. Ionic Bonds Two neutral atoms close to each can undergo an ionization process in order
Chemical Equations and Chemical Reactions. Chapter 8.1
Chemical Equations and Chemical Reactions Chapter 8.1 Objectives List observations that suggest that a chemical reaction has taken place List the requirements for a correctly written chemical equation.
Chemistry B11 Chapter 6 Solutions and Colloids
Chemistry B11 Chapter 6 Solutions and Colloids Solutions: solutions have some properties: 1. The distribution of particles in a solution is uniform. Every part of the solution has exactly the same composition
BET Surface Area Analysis of Nanoparticles
OpenStax-CNX module: m38278 1 BET Surface Area Analysis of Nanoparticles Nina Hwang Andrew R. Barron This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0
Chapter 1 The Atomic Nature of Matter
Chapter 1 The Atomic Nature of Matter 6. Substances that cannot be decomposed into two or more simpler substances by chemical means are called a. pure substances. b. compounds. c. molecules. d. elements.
Mole Notes.notebook. October 29, 2014
1 2 How do chemists count atoms/formula units/molecules? How do we go from the atomic scale to the scale of everyday measurements (macroscopic scale)? The gateway is the mole! But before we get to the
IB Chemistry 1 Mole. One atom of C-12 has a mass of 12 amu. One mole of C-12 has a mass of 12 g. Grams we can use more easily.
The Mole Atomic mass units and atoms are not convenient units to work with. The concept of the mole was invented. This was the number of atoms of carbon-12 that were needed to make 12 g of carbon. 1 mole
Chemistry. The student will be able to identify and apply basic safety procedures and identify basic equipment.
Chemistry UNIT I: Introduction to Chemistry The student will be able to describe what chemistry is and its scope. a. Define chemistry. b. Explain that chemistry overlaps many other areas of science. The
Chem 115 POGIL Worksheet - Week 4 Moles & Stoichiometry
Chem 115 POGIL Worksheet - Week 4 Moles & Stoichiometry Why? Chemists are concerned with mass relationships in chemical reactions, usually run on a macroscopic scale (grams, kilograms, etc.). To deal with
Safe Nano Design Molecule Manufacturing Market
August 14 16, 212 College of Nanoscale Science & Engineering (CNSE) of the University at Albany National Institute for Occupational Safety and Health (NIOSH) Prevention through Design Program Safe Nano
Unit 12 Practice Test
Name: Class: Date: ID: A Unit 12 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1) A solid has a very high melting point, great hardness, and
CHEMICAL SENSORS 1. DEFINITION
CHEMICAL SENSORS 1. DEFINITION A chemical sensor is a device that transforms chemical information (composition, presence of a particular element or ion, concentration, chemical activity, partial pressure
Stoichiometry and Aqueous Reactions (Chapter 4)
Stoichiometry and Aqueous Reactions (Chapter 4) Chemical Equations 1. Balancing Chemical Equations (from Chapter 3) Adjust coefficients to get equal numbers of each kind of element on both sides of arrow.
Chemistry 122 Mines, Spring 2014
Chemistry 122 Mines, Spring 2014 Answer Key, Problem Set 9 1. 18.44(c) (Also indicate the sign on each electrode, and show the flow of ions in the salt bridge.); 2. 18.46 (do this for all cells in 18.44
stoichiometry = the numerical relationships between chemical amounts in a reaction.
1 REACTIONS AND YIELD ANSWERS stoichiometry = the numerical relationships between chemical amounts in a reaction. 2C 8 H 18 (l) + 25O 2 16CO 2 (g) + 18H 2 O(g) From the equation, 16 moles of CO 2 (a greenhouse
2. ATOMIC, MOLECULAR AND EQUIVALENT MASSES
2. ATOMIC, MOLECULAR AND EQUIVALENT MASSES INTRODUCTION: EQUIVALENT WEIGHT Since hydrogen is the lightest of all elements, it was chosen as a standard for determination of equivalent weights. On this basis,
AP Chemistry A. Allan Chapter 8 Notes - Bonding: General Concepts
AP Chemistry A. Allan Chapter 8 Notes - Bonding: General Concepts 8.1 Types of Chemical Bonds A. Ionic Bonding 1. Electrons are transferred 2. Metals react with nonmetals 3. Ions paired have lower energy
Opaline Photonic Crystals: How Does Self-Assembly Work?
Opaline Photonic Crystals: How Does Self-Assembly Work? David J. Norris Chemical Engineering & Materials Science, University of Minnesota 1μm silica spheres See: D. J. Norris, E. G. Arlinghaus, L. Meng,
Fundamental Nanomaterials Research and Development: An Australian Perspective
Fundamental Research and Development: An Australian Perspective Professor Max Lu FTSE, Fed Fellow, Director Http://www.arccfn.org.au Gross Domestic Expenditure on R&D Australia 10000 8000 Business Government
SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001
SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001 1. A small pin contains 0.0178 mol of iron. How many atoms of iron are in the pin? 2. A sample
Pharmaceutical Nanotechnology
Pharmaceutical Nanotechnology Pharmaceutical Nanotechnology Development of Gold-Chitosan-coated PLGA Nanoparticles Marius Hittinger 28.04.2011 Supervisor: Juniorprofessor Dr. Marc Schneider Pharmaceutical
Chapter 12 - Liquids and Solids
Chapter 12 - Liquids and Solids 12-1 Liquids I. Properties of Liquids and the Kinetic Molecular Theory A. Fluids 1. Substances that can flow and therefore take the shape of their container B. Relative
green B 1 ) into a single unit to model the substrate in this reaction. enzyme
Teacher Key Objectives You will use the model pieces in the kit to: Simulate enzymatic actions. Explain enzymatic specificity. Investigate two types of enzyme inhibitors used in regulating enzymatic activity.
Effects of Plasma Activation on Hydrophilic Bonding of Si and SiO 2
PUBLICATION A Effects of Plasma Activation on Hydrophilic Bonding of Si and SiO 2 Journal of The Electrochemical Society, Vol. 149, No. 6, (2002), pp. G348 G351. Reprinted by permission of ECS The Electrochemical