The Detroit Post
Thursday, 21 October, 2021

Is Rust Heavier Than Iron

Daniel Brown
• Tuesday, 10 November, 2020
• 9 min read

Rust is a general term for various forms of iron oxide. They are formed by the chemical reaction between iron and oxygen in the presence of water.

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Rust is actually Fe 2 O 3, a reddish form of iron oxide. Red rust is found in oxygen rich environments and black rust is found in oxygen poor environments such as underwater.

Rust starts by appearing as a light dusting on a piece of unprotected steel or alloy of such. Rust actually removes the iron that the oxygen and water react with, leaving the base metal “pitted”.

Other metals undergo similar corrosion, although the resulting oxides are not commonly called rust. Given enough time, the oxygen, water, and any iron mass eventually converts entirely to rust and ultimately disintegrates.

This is because the rust requires more physical space than the original iron. The rust expanding or puffing causes cracks and voids, which expose more bare metal to the environment.

This helps make aluminum oxide a good protective coating, rather than the start of rapid degeneration. Some things cause steel or iron to rust faster than others.

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The following sources of water will increase this reaction and discussed below. Humidity: Is the amount of water found in the air we breathe.

Dehumidification can greatly reduce the amount of water in hot humid air. Ships, marinas, coastlines and other similar areas are greatly bothered by rust corrosion.

Winters in the north are culprits to rusting cars out prematurely due to “salting” the roads for traction. VCI materials: Vapor Corrosion Inhibitors some chemicals emit a vapor that resists moisture from the air from reaching the surface of the ferrous materials, thus inhibiting oxide formation.

Cathodic Protection: Used on automobiles to slow the rusting process. This will remove most of the rust and may be aided by hitting with a hammer.

Electrolytic: Uses electric current to set up an anode and cathode reaction with the iron oxide. Are not adequately cleaned of rust due to Faraday effects.

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Vinegar provides an electrolyte that facilitates electron transfer that allows iron rust faster than it would if it were not present. Copper corrodes, things made of iron rust.

Copper can corrode, but it takes longer than it does for iron to rust. No in fact it is not iron is stronger because atoms in iron are more dense than aluminum, therefore aluminum is lighter than iron hence weaker than iron.

Copper is much more electrically conductive than steel, and along with its greater flexibility and resistance to chemical corrosion, this makes it much better for wiring than iron or any iron alloy would be. Bronze (an alloy of mostly copper with up to 23% tin) is a much stronger metal than iron.

The chemical compound of rust is ferric oxide so here you have two elements combined to form the rust while iron is just a single element of ferrous. Rusting is a corrosive process usually of steel which has in it a considerable amount of iron.

Suppose you had a steel nail that weighed one ounce and you left it exposed to the elements. It is likely after a certain amount of time passed the nails weight will become negligible and it will probably disappear.


My grandmother use to use a potato and some scouring powder, slice the end of the potato so it is flat, add the scouring powder to the pot and use the potato to scrub off, slicing bits of the potato off as needed, this should remove the rust, if not put some vinegar in the pot and scrub it then rinse well with water and wash with dish washing soap. If things stick to the pot when you are cooking repeat the re-seasoning step.... Good Luck.

Source(s): Chemistry the central science tenth edition by brown, Le May and burs ten. Iron rusting, and the processes inherent to it, have some interesting peculiarities that lead to this conclusion.

Essentially, iron will rust over time unless it is in the middle of an extremely dry environment like a desert. Rust ’s chemical compound is officially called iron oxide (Fe2O3).

Rust can form without the presence of a catalyst to speed it along, like water, but the process will be much slower than normal. Besides water, salt and some other common catalysts also speed up the rusting process.

When iron reacts with chloride in a submerged, underwater environment, green rust will form. This type of rust is most often seen on things like underwater steel support beams.

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Picking up the answer to the question asked, how does rust increase the weight of iron ? Well, looking back at the chemical formula of rust (Fe2O3) shows that oxygen was added to the previously pure iron.

When iron rusts, oxygen is incorporated into its molecular structure, increasing its weight, however slight. Unlike the dense, sturdy structure of iron, rust is brittle and crumbles easily.

But when exposed to wind, water, or any other sort of disturbing element, the rust will crumble away, leaving a lighter weight than before. If the iron comprising a structure is not exposed to the air, then it cannot react with any oxygen, preventing rust from cropping up.

The only drawback to this method is that paint needs to be freshly applied more often than a layer of zinc. Other types of stainless steel products are immensely useful for their longevity and continued quality.

Rusting is a chemical process through which the metal iron reacts with water and in the presence of air or oxygen to produce either of two oxides or both. This leads to the production of rust which is a reddish-brown flaky substance that easily breaks on touch.

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Similarly, iron rusts faster when the PH of the surrounding solution tends to be low or is acidic. The formation of these oxides leads to the production of rust, a brownish soft substance.

This means that whenever you prevent water and oxygen from coming in contact with the metal surface, rusting is essentially stopped from taking place. Common coatings used for this purpose include wax tapes, paints, and varnish.

The grease will basically reduce friction on the metal surface thereby also preventing rusting in the process. This is simply the application of a protective layer of zinc on any metal surface that is susceptible to corrosion and rusting.

Galvanization is done to any metallic object by simply dipping it in hot and molten zinc or even by electroplating. By so doing, the zinc coating gives a cathodic cover to the metal by acting as the anode.

However, galvanization can provide only temporary cover to metal surfaces since zinc can itself get eaten in the process. To do this effectively, you may have to make the iron or steel into a cathode by attaching an anode to it which has an electrode potential that is more electronegative than iron itself.

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The basic principle remains that metallic surfaces that are susceptible to rusting are prevented from coming in contact with water and air. This is due to the fact that rusting cannot take place unless the surface of the metal is allowed contact with these agents.

This makes the metal quite incapable of withstanding stress and hence liable to breaking under the slightest application of force. Additionally, rusting removes the luster or shine on the surfaces of metals by giving them an ugly and repulsive appearance.

Finally, it is equally very important to note that when iron rusts, it becomes heavier due to the flaky coating on its surface. In the case of a bike, the additional weight does not allow perfect control which is liable to cause unnecessary accidents and possible injury.

To ensure the proper protection of your bike, its gears, braking system, and all metal parts, you can use Trust Bicycle Cover. For effective application of this product, first clean and dry the bicycle according to whatever recommendations might have been suggested by the manufacturers in the user manual.

Making sure the Trust logo imprint is facing inwards, place the bag over your bike, and then zip it up completely. The rust -inhibiting qualities of this chemical will remain active for a period of at least five years after the date of its application on the bike.

You are assured of a lengthy covering for your bike, as long as this product is used strictly according to the manufacturer’s instructions. Yes, coconut oil prevents rust excellently in do it yourself (DIY) procedure to safeguard metal components.

However, it requires a proper seasoning for effectiveness in treating cast iron wares by providing an efficient protective coating. We have repeatedly spoken about proper maintenance which will enable us to enjoy our bikes for much longer than will commonly be possible.

Strict adherence to the various procedures explained will slow or even totally stop this degenerative process. This will also save you money which you would otherwise use to replace expensive items that got damaged prematurely through careless handling and sheer ignorance.

I hope you’ve learned one or two things from this post on “Why Is A Bike Heavier After Rusting” If so, kindly do us a favor by clicking on any of the SHARE buttons located below.

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