First, the water, a good electrolyte, combines with carbon dioxide in the air to form a weak carbonic acid, an even better electrolyte. As the acid is formed and the iron dissolved, some of the water will begin to break down into its component pieces -- hydrogen and oxygen. The free oxygen and dissolved iron bond into iron oxide, in the process freeing electrons.
The electrons liberated from the anode portion of the iron flow to the cathode, which may be a piece of a metal less electrically reactive than iron, or another point on the piece of iron itself. The chemical compounds found in liquids like acid rain , seawater and the salt-loaded spray from snow-belt roads make them better electrolytes than pure water, allowing their presence to speed the process of rusting on iron and other forms of corrosion on other metals.
Sign up for our Newsletter! Siddman MC Sep 11, Today's wonder of the day was awesome! I never knew that water with chloride mixed with iron would make green rust! I just thought that the brownish-reddish type of rust was the only one. Karla G Sep 11, I did not know that the cars can rust but now i know it. Wonderopolis Sep 11, Thank you for your positive words. Tomorrow I have a 2 hour chemo treatment and I will definitely be on here! I have been in the hospital for 2 months and found out about my cancer 1 week ago.
I have had 3 treatments so far and will continue to have a treatment daily. The sad thing is that I'm alone most of the time. My family lives in Maine but I am at a hospital in Massachusetts.
Do you have any wonders about cancer? Rust is metal's worst enemey. I have seen plenty of rusted cars, bridges, and other forgotten things with metal in it.
I have learned so very much today like that there is a material that does not rust for that reason. Also I have learned that air and water could make rust worse together than just by themselves. I have also learned you can paint over rust. I can't see how you can paint over rust without it growing back. Does it work geting rid of rust if a car is about to fall apart?
I think tomorrow's wonder is about computers in general or the franchise of Apple. Grace Sep 11, This video was kind of gross even though it's just rust. It looks like termites are eating your car aaaaaaaahhhhhhh!!!!!!!!!!!! I can't wait to see tomorow's. I think it's the future touch screen: everything you can open the curtain from the wall, your table turns into the internet that would be cool.
I think I am doing really goood at wonderopolis and I am only Hi there my name is Kathryn, I think it's very interesting. So you did a great job, good work. Hi Wonderopolis! My name is Rachel. I am 10 years old and I am currently fighting cancer. I really love coming to this website while I am in chemo. Today my tutor came to the hospital and we talked about earth sciences and rust.
He showed me today's wonder and I got so excited. You guys are the ones who encourage me to keep on fighting. Thank you.
I think tomorrow's wonder will be about a new type of chemo for cancer fighters. Wow that video was mind blowing!!!!!!!!!!! Learned many things like This can sometimes be seen on rebar used in underwater pillars.
Rust is usually used to refer to a very common, reddish-brown compound called iron oxide Fe2O3. Iron oxide is formed when iron and oxygen react in the presence of water or moisture in the air.
I also learned from this web and wonder today that cars can rust a lot? Well I didn't know. And how many iPhones have been made and also maybe about Steve jobs and maybe a little video on him and how he discovered apple in his garage with two friends.
Thanks wonderopolis!!!!!!!!!!!!!!!! Smith's Class Sep 11, Dear Wonderopolis, Thank you for the fabulous video of the car rusting. We can't wait! Turner Sep 11, Hello from Mrs. Turner's Fabulous Fifth Grade reading class! We learned a lot about rust today! One of the coolest things was how rust is sort of like fire. We also think that is why people having their cars painted is so important. We wonder what are the main things that are affected by rust besides cars.
Our predictions for tomorrow's wonder is that it will be about computers! Ouverson's Fourth Grade C Sep 11, Sincerely, Mrs. Ouverson's Fourth Grade Class. Foster's Class Sep 11, How long will it take for a car to rust if it's left unprotected? Cingiser Class Sep 11, LOL Sep 11, Wall's 4th Grade Class Sep 11, Dear Wonderopolis, We never knew that the rubber tires could last centuries after they deflate, while the body of the car can become one giant, rusty skeleton. We also learned that rust can turn really brown.
We are wondering whether tomorrow's technological wonder is about something that will be helpful or harmful. We are wondering whether it could be: flying cars, touch-screen technology, or a robot like Rosie from The Jetsons.
Wonder Friend "M" Sep 11, Ramsdell's Class Sep 11, We loved watching the car corrode! We think tomorrow's wonder may be about robots or jet packs. Bayko's class Sep 11, We think tomorrow's Wonder may be about a new computer, iPod, iPad, or a new type of phone.
Mariah Nov 20, Wonderopolis Nov 21, Related Wonders for You to Explore Match its definition: a chemical change that occurs when two or more substances combine to form a new substance. Word Match Congratulations! Share results. Play Again Quit. Next Question. See your results. Share Results. Retake The Quiz. Be the first to know! Share with the World Tell everybody about Wonderopolis and its wonders. Using wrought iron instead of pure iron can also protect against rusting.
With that said, pure iron, wrought iron and cast iron can all rust when exposed to moisture or air. Fluid-filled hoses are often connected to machinery with a clamp. In a typical car or truck, for Facing is a common machining process that involves the use of a lathe or milling machine to remove We use cookies to improve your experience. By your continued use of this site you accept such use. For more information, please see our privacy policy.
Want to read the latest news from Monroe Engineering? As stated previously, only iron or alloys that contain iron can rust, but other metals can corrode in a similar way. Corrosion occurs when an element that easily loses its electrons like some metals combines with an element that absorbs extra electrons oxygen and then comes into contact with an electrolyte solution water.
The job of the water in the corrosion process is to accelerate the flow of electrons from the metal to the oxygen. This process is called a redox reaction and is actually two chemical processes that happen at the same time: reduction and oxidation. Reduction is the name of the chemical reaction that occurs when a molecule gains an electron.
Oxidation is the opposite of reduction and is the name of the chemical reaction that occurs when a molecule loses an electron. Rust and the patina weird green color of copper are the visible results of the metals losing their electrons to the air. Technically, only iron and alloys that contain iron can rust. Other metals, including precious metals like gold and silver, can corrode in a similar way. What sets certain metals apart, is the duration of time it takes for them to begin rusting or corroding.
Copper does not rust, however, it does corrode. Copper is naturally brown and turns a shade of bright green as it corrodes. In a natural environment, copper is extremely reluctant to corrode.
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