'Silver chloride' diaporamas de présentation

Types of Chemical Reactions. Chemistry – Day 10. Lesson Outline. Types of Chemical Reactions: Synthesis Decomposition Single Displacement Double Displacement. Chemical Reactions.

Chapter 4: Fingerprints. “Fingerprints can not lie, but liars can make fingerprints.” — Unknown. Fingerprints. Students will learn:. Why fingerprints are individual evidence. Why there may be no fingerprint evidence at a crime scene.

A History of Photography. It could be said that photography was not “invented”… but that it evolved over time. .

History of Photography II. From Calotype to Film. Evolution cont. Daguerre’s and Niepce’s work was publicy announced at the Academie des Sciences in 1839 Caused immediate public interest in the images French painter Paul Delaroche declared “from this time on, painting is dead!”. Calotype.

Biopotential electrodes. A complex interface. Summer School Timisoara 2002 R. Hinz. the interface problem . To sense a signal a current I must flow !. But no electron e - is passing the interface!. metal cation. leaving into the electrolyte. No current.

Photography II. In 1727 a German professor, Johann Heinrich Schulze, observed that silver salts darkened when exposed to light. But the idea of making pictures using this information did not occur to him. That invention required the talents of a later generation of scientists.

The element Silver. Jasmijn de Hoog Bouthoorn . Silver. The name of my element is Silver and the chemical symbol is Ag. The atomic number is 47 and the atomic mass is 108. It has 47 protons, 47 electrons and 61 neutrons. Silver is a metal.

Silver and it’s alloys. Uses. The alloys of silver are important. Sterling silver is used for jewellery, silverware, etc. where appearance is paramount. This alloy contains 92.5% silver, the remainder being copper or some other metal.

History of the Camera. By: Tikkysha. Camera obscura . Photographic cameras were a development of the camera obscura, a device dating back to the ancient Chinese and ancient Greeks, which uses a pinhole or lens to project an image of the scene outside upside-down onto a viewing surface.

T he history of photography. By Adriana Aleksandrova. Stenopeichen camera and camera obscura. The emergence of photography in the 19th century was the result of several important technical breakthroughs. The first is optical.

Cathodic Protection Systems. ACADs (08-006) Covered Keywords Cathodic protection, corrosion. Description Supporting Material. Cathodic Protection systems.

How are fingerprints used in Forensics?. Fingerprints are impressions that are left on surfaces in the oil which is deposited by a persons touch.

Periodic Table and Chemical Reactions. revision. The Periodic Table. The Elements. http://www.youtube.com/watch?v=d0zION8xjbM http://www.youtube.com/watch?feature=endscreen&v=sm1uxjGm_N0&NR=1. The Periodic Table of Elements What is an element?.

Sample Titration Problems. Problem #1. A 20.00 mL sample of an unknown H 3 PO 4 solution is titrated with a 0.100 M NaOH solution. The equivalence point is reached when 18.45 mL of NaOH solution is added. What is the concentration of the original H 3 PO 4 solution?.

Refining Silver. CSG January 2011, Duke University Renee Shuey, RL "Bob" Morgan, Tom Barton. Removing the Lead from Silver. How did we get here?. USG defines 4 Levels of Assurance (2004) USG defines Assurance Framework, Profiles (2005) as part of E-Authentication Program

Warm-up. 2 O 2 + N 2  2 NO 2 205 grams N 2 = ___________ grams NO 2 315 grams O 2 = ___________ grams NO 2. Stoichiometry : Limiting Reactants. Unit Seven, Day Three Kimrey 14 November 2012. What is a limiting reactant?.

Unit 5 Notes. Chemical Reactions and equations. Unit 5 Notes: Part 1 Types of Reactions. Chemical Reactions occur when bonds between atoms are formed or broken. Indications that a chemical reaction has occurred: Color change Gas production (bubbles)

TYPES OF CHEMICAL REACTIONS . Unit 6 AP CHEMISTRY . AIM: Precipitate Reactions. DO NOW: 1. Take out the worksheet on predicting the reactions (from before midterm exams) Go to your note sheet that you printed out on Types of Chemical Reactions and Solution Stoichiometry

Chemical equilibrium: electrochemistry. 자연과학대학 화학과 박영 동 교수. Examples. In distilled water Hg 2 (IO 3 ) 2 ⇄ Hg 2 2+ + 2IO 3  K sp = 1.3 × 10 -18 K sp = [Hg 2 2+ ][IO 3  ] 2 = x (2 x ) 2 → x = [Hg 2 2+ ] = 6.9 × 10  7 In 0.050 M KNO 3 [Hg 2 2+ ] = 1.0 × 10  6.

A.P. Chemistry. Spontaneity, Entropy, and Free Energy. 16.1 Spontaneous Processes and Enthalpy First Law: Energy cannot be created nor destroyed. ( The energy of the universe is constant.) Spontaneous Processes - processes that occur without outside intervention