https://padlet.com/marystanek/x9r5by9shazw1sdz After reading the article, post what you think is the most important information. en-us 2020-08-31 16:56:55 UTC 2020-09-02 00:15:58 UTC hello@padlet.com marystanek https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/709434882 Corrosion is the degradation of a metal due to chemical reactions between it and its surrounding environment (Bell, 2015). It is most commonly associated with rust, in particular the rusting of metals such as iron.

Iron corrosion is a redox reaction and in this reaction two events occur, oxidation and reduction. During oxidation, a substance loses electrons and during reduction, a substance gains electrons that are released from the oxidation process (Wiley, 2002). In order for the corrosion of iron to occur, both oxygen and water must be present as seen in the redox reaction below:

Iron surrounded by the presence of moisture (H₂O) begins to lose electrons, thus becoming a cation in solution:    Oxidation reaction: Iron is oxidised (loses e-) (electrons)

Fe(s) → Fe²⁺ (aq) + 2 e^–

The lost electrons are now used to decrease the oxygen dissolved in the water (the water will contain some dissolved oxygen as well as H+ and OH– ions):  Reduction reaction: Oxygen is decreased (gains e-)

O^2– (aq)+ 2H₂O (aq)+ 4e^– → 4OH^–

The Fe²⁺ ions then chemically react and bond with the OH^– ions in water to create iron hydroxide, which eventually dries up to form rust: (Iron (III) Hydroxide)

The factors that will speed up the rate of corrosion include an increase in the amount of oxygen, temperature, chemical salts, humidity and pollutants.

]]> 2020-08-31 16:59:07 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/709434882 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711332875 I think that the most important information is that corrosion is the degradation of metal due to chemical surroundings. Iron corrosion happens because of oxidation.  ]]> 2020-09-01 11:47:41 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711332875 graceyoun7069 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711336000 The most important information is that corrosion is caused by degradation of metals because of the chemical reactions between its surrounding environment.Associated with rust like iron.Iron corrion happens because of oxidation and reduction. ]]> 2020-09-01 11:50:12 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711336000 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711987094 The most important information is that oxidation and corrosion are chemically processed. Corrosion is the degradation of a metal due to chemical reactions, as it says that in the first paragraph. The oxidation process and how rust is being created on certain metals would be the most important to learn since in our everyday lives, we tend to have something that is rusted, whether it be a bike or a light pole for street lights. ]]> 2020-09-01 15:07:51 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/711987094 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/712378868 I think it is that because of the environment, the speed of oxidation and reduction, are increasing. this why iron corrosion happens.]]> 2020-09-01 16:39:44 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/712378868 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/712579142 The most important information is that corrosion is the degradation of a metal due to a CHEMICAL REACTION between the metal itself and its environment. Including the fact of its most common example is rust.]]> 2020-09-01 17:25:22 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/712579142 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713074143 The most important information is the corrosion definition is degradation of metal due to chemical reactions within its surroundings and mainly associate with rust. There were factors that causes as well such as an increase in the amount of oxygen, temperature, chemical salts, humidity and pollutants.]]> 2020-09-01 19:38:53 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713074143 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713082897 The most important information in article 4 the process known as oxidation is what causes things like metal screws to have rust on them.]]> 2020-09-01 19:41:59 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713082897 https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713531054 In article 4 it says oxidation is what causes things to rust.]]> 2020-09-02 00:15:31 UTC https://padlet.com/marystanek/x9r5by9shazw1sdz/wish/713531054