I need help! I have looked on the internet on oxidation, but nothing comes up! Yes I am years old and I am also doing a project over what types of metal rusts faster. And I need help on finding a good Hypothesis! I am a hard working student but I just can't find or think of a good Hypothesis it's for my science project. Christian, the first principle is writing such a project is that words have meanings, you can't ignore those meanings and bull on :- We've already said at least 3 times on this page alone that only steel and iron can rust and explained why:- As for your hypothesis, are you sure you clearly know what a hypothesis is.
It's a statement that you believe to be true and now want to scientifically test. Then you might buy 5 bags and count each color to try to prove or disprove your hypothesis, and follow it up with research and an interview with their marketing department. For your metal corrosion project, you should pick something that attracts your curiosity and interests you for some particular reason, because that's what makes for a good project.
It's hard for someone else to guess what you would be enthusiastic about, but think about it. Maybe you collect bottle caps, or old coins; maybe you're interested in classic cars but frustrated by how corroded all the parts always are; maybe you race model boats whose innards get rusty; maybe you do slot cars racing and your car hangs up due to poor electricity conduction from wear or corrosion; maybe you've built a metal wind chime; maybe when you were in kindergarten you made memorabilia for your mom but now all the gold thumbtacks are rusted and the silver ones aren't.
Find something that interests you and form a hypothesis i. I'm 16 years old and I want to know if there is any other metal that can rust except iron. Its for a science project. Hi, De-wet. You should mean "iron oxide", which can only come from the element "iron".
But there are various alloys that contain iron, like cast iron, low carbon steel, high carbon steel and stainless steels of many different grades. Hi, My name is Amy and I am currently studying corrosion at school. Rust is a form of corrosion, that is specific to iron. Iron oxide is rust so no other metal can rust. Metals such as aluminium actually form a surface layer of aluminium oxide which protects the metal from further corrosion.
There is a table known as a Standard Reduction Potentials table that lists elements in the most likely to reduce to the least likely to reduce the least likely to reduce are the most likely to oxidise , so if you wanted to protect something made of iron from corroding rusting you need a 'scrap' piece of metal to be sacrificed. An example of a metal that could be used is zinc or magnesium.
Hi Amy. If you actually understand the words you are using in your explanation, you've achieved a great understanding of the topic! I'm doing the same thing for my project and I have feeling that steel will rust faster so for your hypothesis you should put: "I think steel will rust faster because I am 9 and I just completed this project for the science fair.
Ted's answers were very specific and helped to explain the process and the reasoning for rusting. Thank you. For my project, I used 5 glass jars, salt and hot water.
I tested 5 types of metal for a week. I put one metal in each jar of salt water and waited and recorded the results after a week.
I was kind of surprised by what this experiment taught me and in the process of doing this , I learned a ton of information about metals and rusting. I even learned a thing or two about rust removal that my mom was happy to hear about. Try it for yourselves it was very interesting.
I have a science fair project and if I leave a nail in cold water and hot water will that effect the rate of rust? Yes, Ty, that sounds like a good topic for a science fair project.
Keeping the water hot can be problematic though. Any idea how you are going to do that? Another student opted to do refrigerator temperature vs. But maybe your mother or father could help you put your experiment dish on top of the hot water heater? Or maybe you have an aquarium with warm water in it that you could float your experiment dish on?
Let us know how your experiment comes out. We are both fifth graders and are required to enter the science fair at our school. We are partners. Anyway we want to know which type of metal will rust the fastest and if it will rust within one month and a half due to our science fair is in March. During production, a manufacturer might add small amounts of magnesium, silicon, copper or other elements to make the end product stronger.
Aluminum's properties make it a practical choice for outdoor electrical enclosures or other outdoor metal objects. Regular steel is a combination of iron and carbon, as well as small amounts of other elements.
Stainless steel is a bit different. Though steel does contain iron, stainless steel also contains the element chromium, which is highly corrosion-resistant. Chromium protects the steel from rusting because chromium combines with oxygen before iron does.
Since the iron never has a chance to combine with oxygen, rust never forms. Additionally, stainless steel is popular because it resists the growth of bacteria and stays stable in extreme temperatures.
Bronze does not rust due to its minimal iron content. Keep in mind, however, bronze can react to oxygen in other ways. Bronze is not naturally occurring like pure aluminum or iron. Instead, bronze is a mixture of copper and tin.
This composite structure makes it more resistant to corrosion, but it's not completely immune. It's stronger than copper alone, but it may deteriorate as time passes. Copper will never rust for the same reason as bronze — it contains too little iron. Though it will not rust, copper can form a green film, or patina, on its surface over time.
However, this patina will not flake the way rust does. Instead, it creates an even, thick coating on top of the copper itself. Many people actually prefer the look of oxidized copper to its original state. Just think of the Statue of Liberty. Her copper skin originally looked brown, but it has turned green over time due to the copper's oxidation. This green film is as thick as the original layer of copper and actually helps Lady Liberty withstand weathering.
You can also see this same effect on older pennies, which may start to look green. Any metal that contains a significant portion of iron, also known as "ferrous" metals, can rust. Metals that will rust include:. The chromium combines with the oxygen before the iron is able to do so, preventing rust formation.
This forms a chromium oxide layer that is works in a very similar way to the aluminium oxide layer previously discussed.
It protects the underlying metal because it is very corrosion resistant. On the other hand, ferritic or martensitic stainless steels may be susceptible to rust because they contain less chromium.
Galvanised steel is technically a coated material, but it is worth mentioning here. Galvanised steel is a carbon steel that would most likely rust if it did not have one or more layers of zinc applied to it. The zinc layer acts as a sacrificial metal for the steel. This means that the zinc layer on a galvanised steel sheet will combine with the oxygen more readily than the iron in the steel will. This creates a zinc oxide layer that prevents the formation of iron oxide, thus eliminating the possibility of rust forming.
However, if the zinc coating is damaged, or if the galvanised steel is placed in extreme environments, the zinc coating may be rendered ineffective and the galvanised steel will rust. Stainless steel types, such as or , are a mix of elements, and most contain some amount of iron, which easily oxidizes to form rust.
But many stainless steel alloys also contain a high percentage of chromium — at least 18 percent — which is even more reactive than iron. The chromium oxidizes quickly to form a protective layer of chromium oxide on the metal surface. This oxide layer resists corrosion, while at the same time prevents oxygen from reaching the underlying steel.
Other elements in the alloy, such as nickel and molybdenum, add to its rust-resistance. Many aircraft are made from aluminum , as are car and bike parts. This is due to its light weight, but also to its resistance to corrosion. When the alloy is exposed to water, a film of aluminum oxide forms quickly on the surface. The hard oxide layer is quite resistant to further corrosion and protects the underlying metal.
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