Download ppt on rusting of iron

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cars go rusty faster. Does salt speed up the rate of the rusting reaction? © Boardworks Ltd 200821 of 53 What is needed for iron to rust? © Boardworks Ltd 200822 of 53 Preventing rust Rusting destroys a huge amount of iron and steel every day. People spend a lot of money making sure that their iron and steel buildings, engines, lorries and ships do not rust. What methods could you use to prevent things/


What if there was a chemical reaction that: Turned vehicles and buildings into dust Caused billions of dollars worth of damage per year Was virtually unstoppable.

What if there was a chemical reaction that: Turned vehicles and buildings into dust Caused billions of dollars worth of damage per year Was virtually unstoppable Had the potential to destroy an entire planet’s atmosphere Rust The Silent Killer Why does rust happen? Iron, like most metals, is a strong reducing agent Earth’s atmosphere is 21% O 2, which is a powerful oxidizing agent/


© KCL. WCED. PENTECH. 2002 Cherries and chains1 Here are some juicy cherriesHere is some iron chain In time, the cherries will get eaten and the chain.

. PENTECH. 2002 Cherries and chains In school, Sikili and Solani are doing an experiment to investigate the chemical reaction of the rusting of iron. They have collected three glass test tubes. In the first test tube they have put an iron nail with a small amount of water. In the second tube they have put a nail with some calcium chloride given to them by their/


31/03/2017 Reactivity of Metals.

that they have to be __________ frequently. Words – melting point, replaced, negative, bauxite, reactive, move Rusting Experiment NO RUST – no water NO RUST – no oxygen RUST 31/03/2017 NO RUST – no water NO RUST – no oxygen RUST Rusting 31/03/2017 Rust is formed when iron reacts with water AND oxygen. It’s an example of an oxidation reaction which can be sped up using salt. There are several ways/


KS3 Chemistry 9H Using Chemistry.

– everyday reactions New materials – industrial processes Summary activities Rusting reaction Rusting is the reaction of iron with oxygen in the presence of water. Salt helps to speed up the rate of this reaction. Why does iron rust more quickly at the seaside? iron oxide oxygen + iron Preventing rusting Rusting is the reaction of iron with oxygen in the presence of water to form iron oxide (rust). iron oxide  oxygen + iron Rusting is an ‘unhelpful’ chemical reaction. How do these measures/


BY KWASI SMITH Making Iron Oxide (Rust). Rust Rust is scientifically called oxidation, which occurs when oxygen comes in long- term contact with certain.

, forming a new compound called an oxide and weakening the bonds of the metal itself. If the base metal is iron or steel, the resulting rust is properly called iron oxide. http://www.wisegeek.com/what-is-rust.htm The goal + Stoichiometry My goal in this reaction is to create Iron Oxide (Rust) by means of exposing Iron to Oxygen under prime conditions. This is an exothermic reaction, which/


Standard Grade Revision Units 11 and 12 Q1. The box contains the names of some metals. You may wish to use page 8 of the data booklet. magnesiumlithium.

2 O(g) E2H 2 O(l + O 2 (g) + 4 e -  4OH-(aq) FFe 2+ (aq) + 2e-  Fe(s) Identify the two equations which represent a step in the rusting of iron. C and E Standard Grade Chemistry Units 11 and 12 Revision. Q14. Some metals are found uncombined in the Earth’s crust but others have to be extracted from their/


The Stuff of Everything… …even water and life. What is matter? Three Properties of Matter: 1. has mass 2. takes up space 3. shows inertia (force needed.

in the appearance or state of matter 2. Chemical – a change in the chemical make-up of matter Can matter change? P Melting Ice P Water Freezing P Water Evaporating C Burning Wood C Rotting Wood P Making Glass from Sand C Rusting Iron C Souring Milk P Water /change? P Melting Ice P Water Freezing P Water Evaporating C Burning Wood C Rotting Wood P Making Glass from Sand C Rusting Iron C Souring Milk P Water Boiling C Animal Decaying C Enzymes Digesting Food P Salt Dissolving in Water Can matter change? P/


The Fe II-III oxyhydroxycarbonate fougerite mineral and green rusts in hydromorphic soils J.-M. R. Génin et al. Institut Jean Barriol Laboratoire de Chimie.

1, Département Matériaux et Structures, ESSTIN, 405 rue de Vandoeuvre, F-54600 Villers-lès-Nancy, France. E-Mail:genin@lcpme.cnrs-nancy.fr Green rusts and fougerite in the biogeochemical cycle of iron, A. Herbillon and J.-M. R. Génin Editors, C. R. Geoscience, 338 (2006) 393-498. “Gütlich, Bill, Trautwein: Mössbauer Spectroscopy and Transition Metal Chemistry/


By Miss Buicke Metals and Non-metals. What we need to know from the syllabus : OC45 understand that rusting is a chemical process that changes iron into.

as gold and silver are very unreactive and are use in the manufacture of jewellery. Rusting The corrosion of iron is called rusting Iron reacts with both water and oxygen and forms iron oxide or rust. Rust prevention: Rusting of iron or steel costs us millions of euros each year. Any object containing iron will rust if exposed to water and oxygen. Rusting can be prevented by coating the metal with a material to prevent water/


Metal Types. Objectives Know the types of metals and examples of them Know the types of metals and examples of them.

ingredient is iron. Pig iron, cast iron, wrought iron, and steel/ Pig iron, cast iron, wrought iron, and steel/ Pig iron or cured iron Pig iron or cured iron iron ore changed to pig iron by a blast furnace. iron ore changed to pig iron by a blast furnace. Steel Steel iron characterized chiefly by its carbon content. iron characterized chiefly by its carbon content. Cast iron A product of pig iron A product of pig iron Contains large amounts of carbon Contains/


Rust and Food Spoilage Our New Unit. Unit Overview In this unit, you will learn about how metals rust and how different types of food go bad. You will.

easily, so if you’re near the sea you need to be extra careful. The Effects of Rust When rust happens, metals are actually changing into iron oxide. This makes the metal weaker and easier to break. Therefore, whatever rusted is not as useful as before. The Effects of Rust Rust also makes a nice home for certain bacteria that are harmful to humans. Therefore is you are/


Oxidation of Iron - An example of a Combination Reaction Vanderbilt Student Volunteers for Science Training Presentation Vinse/TnScore Fall 2014.

investigate the oxidation of iron, commonly called rusting. This example of rusting is called a combination reaction A Combination Reaction is a reaction where two or more reactants are chemically bonded together to produce a single product. Rust is the common name for a very common compound, iron oxide. Rusting is a very slow process which takes place over several weeks or months. Experiment 1: Rusting of Iron Filings 1.Put/


Dr. N. RAMACHANDRAN, NITC1 2 METAL JOINING Even the simplest object is an assembly of components Complex ones - greater number of parts- subassemblies.

written. Welding has "Arrived" when London, England hosts 900 attendees at the "Great Symposium" on the "Welding of Iron and Steel" Solar Aircraft Company of San Diego California develops a flux to combat welding problems with stainless steel manifolds for the U.S. Navy and /Co 2 Gas ) E 71 T-1M, E 71 T-2M ( Ar + Co 2 Mix) GMAW CS Wire Generally Copper Coated –Prevents Oxidation / rusting in Storage –Promotes Electric Conductivity in Arcing Available In Solid & Flux Cored –Size in mm 0.8, 1, 1.2, 1.6, 2, 2/


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more reactive than expected. What is the chemical name of rust? © Boardworks Ltd 200716 of 35 What happens to iron when it rusts? Rusting is an oxidation reaction between iron, oxygen and water, which leads to the formation of hydrated iron (III) oxide - the chemical name for rust. What are the word and chemical equations for the formation of rust? wateroxygen hydrated iron (III) oxide (rust) iron +  + 4Fe (s)2H 2 O (g) 2Fe 2/


Green rusts and the corrosion of iron based materials J.-M. R. Génin et al. Institut Jean Barriol Laboratoire de Chimie Physique et Microbiologie pour.

s -1 ) -15-10-5051015 92 94 96 98 100 D3D3 D2D2 D1D1 Transmittance (%) V (mm s -1 ) 15 t1t1 Most of the time the corrosion of iron ends into a ferric oxyhydroxide FeOOH that is the result of the oxidation of the green rust by dissolution-precipitation V (mm s -1 ) -15-10-50510 92 94 96 98 100 S2S2 S1S1 D3D3 D1D1 Transmittance (%) V/


Objective  I can write balanced equations describing chemical reactions using the law of conservation of matter.

(g)  Fe 2 O 3 (s) Example #1: Rusting “solid iron reacts with oxygen gas to produce iron(III) oxide (rust)” iron + oxygen  iron(III) oxide Fe 3+ O 2- Fe(s) + O 2 (g)  Fe 2 O 3 (s) 4 Fe(s) + 3O 2 (g)  2Fe 2 O 3 (s) Some chemical reactions require the use of a catalyst. Catalyst—a substance that speeds up the/


C1 Fractional distillation Cracking Burning fuels History of the atmosphere Air pollution Polymers Cooking and baking Perfumes and nail varnish Paints.

Haber process, nitrogen and hydrogen react together under these conditions:  a high temperature - about 450ºC  a high pressure  an iron catalyst. The Haber Process Go to C1Go to C2Go to C3 Making Cars Aluminium The main materials used in the manufacture of cars: Rusting Iron and steel rust when they come into contact with water and oxygen. Both water and oxygen are needed for/


Ch 16 Oxidation and Reduction. © 2012 Pearson Education, Inc. 16.1 The End of the Internal Combustion Engine?  If our cars don’t run on gasoline, what.

(aq) + e − Cathode Reaction: Ag(aq) + e −  Ag(s) © 2012 Pearson Education, Inc. 16.8 Corrosion: Undesirable Redox Reactions Corrosion is the oxidation of metals.  The most common kind of corrosion is the rusting of iron.  Rusting is a redox reaction in which iron is oxidized and oxygen is reduced. © 2012 Pearson Education, Inc. 16.8 Corrosion: Undesirable Redox Reactions  The Fe(OH) 2 formed in the/


C2 The Structure Of The Earth Construction Materials Metals and Alloys Acids and Bases Making Ammonia Making Cars Fertilisers And Crop Yields Chemicals.

) sulphate. Pure copper forms on the negative electrode. Alloys Making Cars Aluminium The main materials used in the manufacture of cars: Rusting Iron and steel rust when they come into contact with water and oxygen. Both water and oxygen are needed for rusting to occur. In the experiment below, the nail does not rust when air or water is not present. Remember that 21 per cent/


Extraction of metals Only some unreactive metals such as silver, gold and platinum can occur freely in nature. Most metals react with other elements to.

containers Non-toxic Resistant to corrosion Good conductor of heat Aircraft body High tensile strength Conditions for Corrosion of Iron Presence of oxygen Presence of water Presence of sodium chloride/acidic pollutants speed up rusting Rusting is an exothermic redox reaction where iron is oxidized to form hydrated iron(III) oxide 4Fe(s) + 3O2(g) + 2xH2O(l)  2Fe2O3.xH2O (s) Prevention of rusting Use of protective layer Painting – Used in cars, ships, bridges/


Starter – in the back of your book  Where is Fe on the Periodic table?  Where does it fit in the reactivity series?  How would you extract it from its.

the reactivity series?  How would you extract it from its ore? Objectives  To be able to list the properties of iron and how these relate to its use.  To be able to explain the chemical reaction of rusting in scientific terms;  To know how methods of rust prevention works. Did you know?  Fe is the most widely used metallic element  The melting point is 1808K and/


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to restart presentation. How is rust like tooth decay? By Victor RUST TOOTH DECAY! RUST TOOTH DECAY! RUST TOOTH DECAY! Loading… Please wait… It will take a bit of time to restart presentation. How is rust like tooth decay? By Victor RUST TOOTH DECAY! RUST TOOTH DECAY! RUST TOOTH DECAY! Rust is like tooth decay because when Iron is rusted, it may create a hole in there. Rust is brown and tooth decay/


Ecphrastic poetry & the development of professional literacy in chemistry.

water-molecule/ What concept does this image evoke? http://icelines.blogspot.com/2011_06_01_archive.html DNA/RNA sequencing of Gromia cf. oviformis Example Concrete poem http://icelines.blogspot.com/2011_06_01_archive.html What concept does this image /rust.aspx Example Free Verse poem When iron’s reddish, it’s just rust, Can turn some metal, into dust! Yes, iron mixed with oxygen, throw a little moisture in, Oxidizes, makes it rust, And rusty irons, hard to trust… http://sciencepoems.net/sciencepoems/rust/


Spontaneity of Redox Reactions How is related to other thermodynamic quantities such as  G  and K. In an electrochemical cell, chemical energy is converted.

bkk Corrosion: Deterioration of metals by an electrochemical process. Corrosion causes enormous damage-buildings, bridges, ships, automobiles etc. Examples-Rusting of iron, tarnish on silver, green patina on copper or brass etc. What happens in rusting? In the formation of rust on iron, oxygen and / 2 O(l)→ 2Fe 2 O 3. xH 2 O + 8H + (aq) The hydrated form of iron(III) oxide is called rust. As the amount of water associated with iron oxide varies, we represent the formula as 2Fe 2 O 3. xH 2 O Chang, R.(2002). /


CHAPTER 4 CORROSION AND ITS PREVENTION

highly unstable and have a tendency to revert back in their original state that is to stable state by the process of corrosion(oxidation). Example; Rusting of iron is the most popular example of corrosion. Usually the Surface of metal is covered with a thin layer of oxide. When this layer is broken, bare surface is exposed to the environment and this area act as an anode/


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the specific name given to the corrosion of iron. It is a chemical reaction between iron, oxygen and water. What is the word equation for the formation of rust? hydrated iron oxideiron oxygen water +  + Salt can increase the rate of rusting. This iron bolt is on a seaside structure and is nearly completely corroded. What is rusting? The chemical name for rust is hydrated iron oxide. Rust can form on cars and buildings/


Corrosion Control Iron’s nasty side…rust All metals corrode There are various types of corrosion – Physical corrosion, or “erosion corrosion” – Stray.

metals) – Bacterial corrosion (what happens at the pipe wall stays at the pipe wall) Galvanic Cell From Wikipedia Corrosion of Iron (cast iron pipe) The rusting of iron is an electrochemical process that begins with the transfer of electrons from iron to oxygen. The key reaction is the reduction of oxygen O 2 + 4 e - + 2 H 2 O → 4 OH - Because it forms hydroxide ions, this process is/


Cassie Justin JadeSammy CaitlinLoren Kegan AJ Emma Kayla JordanPeterRoseannaBex Alex Front of class Hamish Will ArloRyan Tim JordanLoreneRory Hannah Braiden.

+ O 2 2CuO Metals and oxygen What is Rust? Rust only occurs with iron (Fe) metal. Rusting is where iron reacts with oxygen in the air to form rust (also known as iron oxide Fe 2 O 3 ) To form rust iron, water and oxygen must be present. Rust is always noticed by a reddish brown layer occurring on the surface of the iron. What makes a metal a metal? Answer the/


Cars An Introduction. Cars To be able to: AllMostSome To understand the history of cars (MYP 2/3) To explain which Scientists were involved in the history.

, sodium bicarbonate and vinegar. cpa@pac52 Rusting is the reaction of iron with oxygen in the presence of water. Salt helps to speed up the rate of this reaction. Why does iron rust more quickly at the seaside? Rusting Reaction Rusting is an ‘unhelpful’ chemical reaction. Iron that is exposed to the weather is usually coated with a layer of paint. New products that contain iron are often boxed with a small/


外研版 高一年级 ( 必修 1) Module 5. Reading B B. aim D. method A.result C. conclusion D A C The steps of a scientific experiment.

heated steam Read the passage and fill in the chart. Passage B Iron in dry air Iron in air-free water Iron in ordinary water Stage A (starting experiment) cotton wool water Stage B (1 week later) Stage C (Result) nails water Iron does not rust Iron does not rust Iron rusts 1.In the first part of the experiment, the ___ is dry, not wet. 2. It shows that/


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cut, more chromium atoms quickly form a new protective layer. protective Cr 2 O 3 layer air Stainless steel Mainly iron and chromium (12%) with small amounts of nickel and carbon. © Boardworks Ltd 200910 of 31 Rust summary © Boardworks Ltd 200911 of 31 © Boardworks Ltd 200912 of 31 Electrolysis Electrolysis involves redox reactions: ions lose electrons at the positive electrode (anode) and gain electrons at the/


Metrics, Density, & Matter Topic: Metric System Objectives: Day 1 of 4 I will know how the metric system is based on powers of 10 I will understand the.

Chemical Properties describe how a substance changes into one or more different substances An example would be rust Iron combines with oxygen in the air to make rust (a different substance with different physical properties) Properties of Iron Physical Property Chemical Property Iron is Magnetic Iron Combines with Oxygen to form rust What are Chemical Properties? A characteristic that describes how a substance ______ into one or more/


Types of Compounds 15/10/2015 There are two types of compounds 1. Ionic Compounds These are compounds where electrons are transferred from one atom to.

are all naturally occurring isotopes of hydrogen Metals and oxygen What is Rust? Rust only occurs with iron (Fe) metal. Rusting is where iron reacts with oxygen in the air to form rust (also known as iron oxide Fe 2 O 3 ) To from rust iron, water and oxygen must be present. Rust is always noticed by a reddish brown layer occurring on the surface of the iron. Summary – Metal Reactions metal + oxygen/


By: Taylor, Stephanie and Megan. How can you prove that these two substances are composed of different atoms? First, we started brainstorming with a basic.

Copper atom Research : Our research consisted of trying to find out something that could really differentiate an Iron atom and a Copper atom. Oxidization of the two metals When looking back at the properties of both Iron and Copper, we noticed that Iron rusts when exposed to damp air, whereas Copper does not rust, but simply changes colour. The Equation : An Iron atom goes under a reaction with Oxygen/


CORROSION. Rusting of iron is the commonest form of corrosion. It is the process that gradually destroys motor car bodies, steel bridges and other structures.

Rusting of iron is the commonest form of corrosion. It is the process that gradually destroys motor car bodies, steel bridges and other structures and iron roofing and guttering. R ust is the reddish-coloured, flaky or porous deposit that forms on exposed iron and steel; it is hydrated iron/ring or bracelet does not tarnish (corrode). Predicting the tendency of metals to corrode HOW RUSTING OCCURS At some spot on the iron surface (often a spot under stress), iron atoms lose electrons to form Fe 2 + ions: Fe(/


Direction of Electron Flow During Corrosion Aim: To find out the how electrons flow during corrosion. To find out how to identify electron flow during.

copper is due to the corresponding reduction reaction, which results in the formation of OH- ions. Iron and Carbon Cell In an iron/carbon cell, the blue colour around the iron indicates that the iron is rusting (presence of Fe 2+ ions). In an iron/carbon cell, the blue colour around the iron indicates that the iron is rusting (presence of Fe 2+ ions). As corrosion takes place, electrons flow away from/


The Effects of Microgravity on Oxidation Co-Principal Investigators: Dustin Fields 11th Grade, Alec Lewis 11th Grade, Kai Turner 11th Grade Submitting.

develops. Questions to be Addressed How does a microgravity environment affect the density of iron oxide crystals? Will a microgravity environment affect the rate at which the iron oxide forms? Does rust attach itself to the iron rod differently in a microgravity environment? Will the solidity of the rust crystals be affected by a microgravity environment? Applications for Corrosion Research in Microgravity The International Space Station is/


Steel Wool Lab Day 2 Gathering Data & Making Sense Out of It.

process? 1.Hydrogen 2.Nitrogen 3.Argon 4.Oxygen The chemistry… Fe (Iron) + O 2 (Oxygen) Iron Oxide (Rust) + Fe 2 O 3 What is the state of matter for each of the parts of this chemical equation? Fe (Iron) + O 2 (Oxygen) Iron Oxide (Rust) 1.Iron is a solid, Oxygen & Iron Oxide are gases 2.Iron and Iron Oxide are solids, Oxygen is a gas 3.All 3 are gases 4/


CHEM1612 - Pharmacy Week 10: Corrosion/Batteries Dr. Siegbert Schmid School of Chemistry, Rm 223 Phone: 9351 4196

at the Fe (inactive) cathode reduce O 2 to OH - 3) Fe 2+ migrates through the drop and reacts with OH - and then O 2 to form rust. Lecture 29 - 10 Redox chemistry of corrosion The rusting of iron involves two (or more) redox reactions: Anode: 2 x {Fe  Fe 2+ + 2e - }E ox 0 = 0.44 V Cathode: O 2 + 4H + + 4e -  2H 2/


Balancing Redox Equations Iron (Fe) rusts (is oxidized) when it reacts with oxygen (O 2 ) in the air. 2Fe + 3O 2  Fe 2 O 3 [iron(III) oxide] A new iron.

) oxide] 0 lose 3 e’s, LEO 0 +3-2 gain 2 e’s, GER What are the oxidation numbers of iron and oxygen in the rust equation? Definitions to Memorize: Loss of Electrons = Oxidation Gain of Electrons = Reduction To do redox chemistry, you must be able to determine which atoms have lost e’s (have been oxidized) and which atoms have gained e’s/


Technical Specification

SILVER Wash Capacity : 6.5 Kg CAREEN FEATURES 15deg Tilt Drum for easy loading of clothes Stainless Steel Drum PCM Metal Body Fuzzy Logic Control Memory Back Up “Do It/ Coated Metal Body Fuzzy Logic Control 11 Wash Programs 5 Auxiliary program : Baby Care, Less Iron, Eco Wash, Intensive Wash & Prewash. Variable Spin speed : No Spin/ 600/ 800/Wash Capacity : 6.5 Kg KYLE PLUS FEATURES Wash Capacity – 6.5 kg Rust free plastic body Normal Pulsator 2 Wash Programs Auto Soak Buzzer Magic Filter Waterfall /


Demonstrating Measuring Devices

longer in reach usually provide more torque. This uses the principle of a lever. Turning tools – examples: Photos courtesy of Snap-on Tools. Removing and Preventing Rust Rust is a big problem! A chemical reaction when moisture meets metals containing iron Rust is also called ferric oxide. Rust is corrosive – eats away metals containing iron Problems caused by rust … Can destroy tools Prevents efficient tool use Parts like bolts/


METALS FERROUS METALS NONFERROUS METALS

used to make castings and machinery parts, window frames, bath basins. Wrought Iron The wrought iron of ancient times had some advantages. It had less tendency to corrode (rust) and it had a fibrous quality that gave it a certain toughness. /of iron is greatly improved when the quantities of chromium are increased. At 11.5 % there is sufficient chromium to form an inert film of chromic oxide over entire metal surface. This steel is considered stainless. GALVANIZING Steel sheets may be protected against rust/


20) In an experiment, 50 cm 3 of 1 mol dm -3 NaCl is added to 50 cm 3 of 1 mol dm -3 AgNO 3 solution. The following data is obtained ∆H = mcO/mol = 2940/1000x.

. variable Manipulated variable : Metal X and metal Y //two different metals(one metals is less electropositive and one is more electropositive than iron) //pairs of metal X / iron and Y/iron Responding variable : Rusting of iron //iron rust //the formation of brown solid //formation of blue spot Constant variables: Iron nail //jelly solution //temperature c. hypothesis Able to state the relationship between the manipulated variable and the responding variable with direction correctly/


Comparison of Corneal Rust Ring Removal By Magnetic and Nonmagnetic Tipped Burr Sejal R. Amin, MD Christopher T. Hood, MD Shahzad I. Mian, MD W. K. Kellogg.

cornea contained 6 pockets. The cornea was covered with a gauze soaked in corneal storage medium (Optisol) for a total of 10 days to allow for adequate rust ring formation. Corneal pocket with iron filing Iron filings Methods CFB and Rust Ring Removal Each of the 36 CFB were randomized to removal by either the standard nonmagnetic or novel magnetic tipped burr. The surgeon was masked/


Properties of Matter Wendy Bramlett Eastwood Middle School.

: a chemical reaction, usually between a metal and the air. Example: iron reacts with oxygen in the air to form rust. chemical property: A characteristic of a substance that involves chemical reactions. Lesson 23.1 - Why are some/the petri dish. Record observations. 24.1 TreatmentAppearance of Nail No treatment Paint Galvanizing Petroleum jelly Magnesium wrapped Stainless steel nail Lesson 24 - Rusting occurs when iron is combined with oxygen. Rusting is a chemical reaction with reactants and products……… /


 Question  Question: If you have a variety of metals and you want to determine which is the most reactive and which is the least reactive, how would.

) and O 2(g) + 2H 2 O (l) + 4e– → 4OH – (aq) (reduction) Iron(II) reacts with hydroxide to form the green precipitate, iron(II) hydroxide Fe 2+ (aq) + 2OH – (aq) → Fe(OH) 2(s) (green rust) Further exposure to moisture and oxygen leads to the oxidation of iron(II)hydroxide to red-brown iron(III)hydroxide 4Fe(OH) 2 (s) + 2H 2 O (l) + O 2/


The solution to the first problem is that the ship in the deep water was carrying a cargo of zinc and magnesium. These two metals are both more reactive.

the first problem is that the ship in the deep water was carrying a cargo of zinc and magnesium. These two metals are both more reactive than iron and will protect the iron from rusting by sacrificial protection (they corrode first). They need to be in direct contact with the iron so electricity can flow from one to the other. When the ship sank the/


Formation of the Great Lakes Part 2 The Precambrian Continued History Channel Video Chapter 2 in Grady Chapter 2 in Greenberg.

fluctuated over time. Don’t know cause of fluctuations Paleoproterozoic (2500 to 1600 mya) Peak of stromatolites Cyanobacteria oxygenated the atmosphere Oxygen caused “Rusting of the Earth” Depletion of oceanic iron Combined with oxygen and precipitated as “rust” Precipitated iron settled to the ocean floor Iron found in Banded Iron Formations Red Beds Rusting of the Earth: 2.2-1.9 bya During peak of stromatolites As underwater chimneys called deep-sea vents/


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