PPT-Oxidation-reduction reactions

Oxidation and reduction Oxidation and reduction oxygen transer A substance has been oxidised if it gains oxygen Oxidation is gain of oxygen A substance has been reduced if it . Part 1. Notes 11. Beginning Unit 4. Salt on icy roads can make driving safer, but the salt that clings to the metallic parts of cars can cause them to corrode or rust relatively quickly. . This corrosion is one example of a chemical reaction called oxidation-reduction. You will learn about oxidation-reduction reactions.. Part 1 . Zagazig. University . Clinical Pharmacy . Programe. . Analytical Chemistry Department . PC 306. 1. Definition. Old . definition. Oxidation. is the reaction of substance with oxygen. Reduction . Oxidation and Reduction. Oxidation-reduction (. redox. ) reactions involve transfer of electrons. Oxidation – loss of electrons. Reduction – gain of electrons. Both half-reactions must happen at the same time. IGCSE Chemistry . 620. OXYGEN. Gaining of oxygen is called oxidation.. Carbon + Oxygen .  Carbon dioxide. Carbon is oxidised to carbon dioxide.. Methane burns in oxygen.. CH. 4. . + . 2O. 2. . Chemical Equations. This equation means:. 4 Al(. s. ) + 3 O. 2. (. g. ) 2 Al. 2. O. 3. (. s. ). 4 Al atoms + 3 O. 2. molecules yield 2 molecules of Al. 2. O. 3. 4 Al . moles. Definition. If oxidation occurs, then reduction must also occur. Any chemical process in which elements undergo a change in oxidation number is a . Redox reaction. Example. 2Na + Cl. 2. . → 2Na. Redox. ) Reactions. Chapter 20. Salt on icy roads can make driving safer, but the salt that clings to the metallic parts of cars can cause them to corrode or rust relatively quickly. This corrosion is one example of a chemical reaction called oxidation-reduction. You will learn about oxidation-reduction reactions.. Addition . Reactions. Addition is the opposite of elimination. A pi bond is converted to a sigma bond. Addition . Reactions. A pi bond will often act as a Lewis base (as a nucleophile or as a . Brønsted. REDOX PROCESSES. 9.1. OXIDATION AND REDUCTION. ESSENTIAL IDEA. Redox (reduction-oxidation) reactions play a key role in many chemical and biochemical processes.. NATURE OF SCIENCE (1.9). How evidence is used – changes in the definition of oxidation and reduction from one involving specific elements (oxygen and hydrogen), to one involving electron transfer, to one invoking oxidation numbers is a good example of the way that scientists broaden similarities to general principles.. Can you spot three (3) differences?. Can you spot the differences in the reactions?. (1) 2Mg. (s. ) . O. 2(g) . → . 2MgO. (s. ) . (2). CaCO. 3(s) . →. . CaO. (s) . CO. 2(g). (3) . NaOH. (. Jacob Embley. Dr. John Colton,. . Dr. Richard Watt, Trevor Smith, . Cameron Olsen, Kevin . Zenner. , and Stephen Erickson. What is ferritin?. Spherical protein complex . Nano. -cage composed of 24 sub-units. Alessandro Volta Michael Faraday Walther . Nerst. Electrochemistry. Using electrical potentials and currents as a way to affect chemistry. Using chemistry to generate electrical potentials and currents. Unit 4: Reactions in Aqueous Solutions Day 8: Metathesis Reactions and Gravimetric Analysis Warm Up WITHOUT LOOKING AT YOUR FLASH CARDS, FILL OUT THE FOLLOWING TABLE: TIME: 4 MINUTES WHEN DONE: Textbook Chapter 20. Discovery Lab. What was clinging to the nail?. What happened to the color of CuSO. 4. solution?. What is the balanced equation?. Discovery Lab. What type of reaction occurred?. What are the four types of reactions we learned about previously?.