Thanks for visiting us at Wonderopolis! Check out our Wonder about rust, Marie! You will learn about the chemical reactions that cause rust! Great work, Olivia! We Wonder if you learned anything else from this chemistry Wonder! We appreciate your thoughts, Olivia D! We understand that sometimes our Wonder Friends won't love our videos as much as we do, but we're glad you shared your opinion today!
We hope you learned something new and exciting today during your visit to Wonderopolis-- we re glad you're here! Alright, thanks for sharing your comment with us, Ethan B! We are super excited to have you here!
We Wonder if you can do some more research of your own to learn about the elements in salt NaCl and how they might speed up the rusting process! We bet you can use your imaginations to help you guess, too!
We're not sure where the rust is in that photo, Eric, but we applaud your question! We bet there are lots of places you've seen rust exist-- we Wonder what you imagine it is! Thanks for sharing your comment today, Wulf! We are so happy to have great Wonder Friends like you! Take a look at the Wonder about that picture-- it's rust, Eric! Rust can form in different colors, but one of the most recognizable is the brownish-orange color you might see on older cars.
Check it out! Way to learn something new, Karla G! It's so exciting to Wonder about rust with you-- we hope you enjoyed the video, too! We believe in Rachel the CancerFighter10! You are a brave Wonder Friend with many talents to share. We will be thinking of you tomorrow during your treatment, but we'll right here when you are finished!
Look how much you've learned today, Matt D! We believe that you've got it right-- painting over a car doesn't stop the rust from occurring, but sometimes it can slow down the process of rust. We can't wait to Wonder with you tomorrow Hey there Grace! We are glad you commented about rust today-- it's a crazy idea if you think about it! Can you imagine the strong teeth termites would have to have to eat through a car!
We are glad that you were able to see how rust affects the car, too! We think you've been doing a great job of using your imagination about technology-- we like the idea of turning your table into a computer to use the internet! Thanks for your encouraging comment, Kathryn! We are so glad you're here! Our hearts and our smiles are big for you as you grow stronger and healthier after your treatments!
There are so many exciting things to Wonder about and we hope you are using your imagination each and every day! We are sending our support from Wonderopolis-- and we will see you very soon! Turner's class-- hi friends! Who knew rust and fire had something in common?
We think different modes of transportation, like a bicycle, scooter or even the blades of ice skates, would rust easily if not properly cared for. What other types of substances can easily rust? What have you, our Wonder Friends, seen rust in the past? Ouverson's Fourth Grade Class! Thanks for sharing your thoughts about today's rusty Wonder! Foster's class are using their imaginations with us!
Rust can happen very quickly OR very slowly-- it all depends on the environment. If a car is located outdoors and has a lot of inclement weather surrounding it, the chemical reaction rust can happen fast. If it's in a safe, dry place the car can rust but the process might happen slowly. We Wonder in what kind of situations a car would rust quickly? We Wonder if you can do some more research of your own to find out what could happen to the hydrogen in the presence of water. One possibility is that the hydrogen ions turn into gas.
Do you think there are any other scenarios? Thanks for commenting today-- we are so happy to read your post! We like your style, Dr. Hi there Fazze Hugzz, thanks for sharing your comment with us today! Hi to all our Wonder Friends in Mrs. Wall's 4th grade class! We are celebrating to know that you've been learning about rust with us today!
There are so many interesting and science-related reactions that happen when rust is formed, which makes it turn brown! We think you'll be smiling when you join us for tomorrow's virtual Wonder!
Thanks for leaving your awesome comment, Wonder Friend M! Ramsdell's class are enjoying our rust Wonder today! Thanks for sharing your guesses, Wonder Friends.
We think you're virtually there! Hi there, Ms. Bayko's class! We're happy you're back today! We think you've got some super guesses for tomorrow! We Wonder if you use a computer, iPod or iPad in your classroom? I love your website! We'd love to know more about your science experiment!! Nice work, Olivia! We hope you learned something new about the chemistry when oxygen and iron mix, too! We Wonder if you have any other interest in chemistry?
We are undergoing some spring clearing site maintenance and need to temporarily disable the commenting feature. Thanks for your patience. Drag a word to its definition. You have answered 0 of 3 questions correctly and your score is:. Want to add a little wonder to your website? Help spread the wonder of families learning together. We sent you SMS, for complete subscription please reply. Follow Twitter Instagram Facebook. Why do some things rust?
What is rust? How can you prevent rust? Tags: See All Tags alloy , chemistry , chloride , combustion , corrode , Fe2O3 , galvanization , iron , iron oxide , metal , oxygen , paint , reaction , rust , salt , science , time , water , weather , zinc.
Wonder What's Next? Get a friend or family member to give you a hand with one or more of the following fun activities: What examples of rust can you find in the world around you?
You might be surprised if you take the time to look. Check out your house, especially the garage and any metal objects you might find in the backyard. If you have one, use a camera to document the examples of rust that you find. This article was originally published with the title "Corrosion of Metals in Water" in Scientific American 8, 5, 38 October Already a subscriber?
Sign in. Thanks for reading Scientific American. Create your free account or Sign in to continue. See Subscription Options. Go Paperless with Digital. The reaction of iron and chloride underwater is also referred to as rust. Certain factors speed up the rusting process, such as salt in the water. Rusting is a common form of corrosion, which occurs when metal atoms react with their environment.
Salt water does not make a metal rust, but it accelerates the rusting process because electrons move more easily in salt water than they do in pure water.
Not all metals rust. This stops the metal coming into direct contact with water or moisture in the air and oxygen. On the other hand, iron rusts because it forms hydrated iron oxide when it comes into contact with water or moisture in the air and oxygen. Rusting cannot occur without both water and oxygen. Water helps iron react with oxygen by breaking up the oxygen molecule.
Iron or steel rusting is an example of corrosion -- an electrochemical process involving an anode a piece of metal that readily gives up electrons , an electrolyte a liquid that helps electrons move and a cathode a piece of metal that readily accepts electrons. When a piece of metal corrodes, the electrolyte helps provide oxygen to the anode. As oxygen combines with the metal, electrons are liberated. When they flow through the electrolyte to the cathode, the metal of the anode disappears, swept away by the electrical flow or converted into metal cations in a form such as rust.
Here's what happens when the three get together:. When a drop of water hits an iron object, two things begin to happen almost immediately.
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