Fast Rust Task
What 3 ingredients are needed for rust to occur.
| Iron | Water | Oxygen from the air |
Write a brief paragraph explaining the rusting process (why rusting occurs)
| Rust occurs when metal is exposed to air or water for a very long time.When oxygen which is the air we breathe mixes with water the iron surface of the metal then starts to react with the oxygen mixed with the water, this forms Iron oxide. Iron oxide reacts with the water, which then forms hydrated Iron Oxide, the reddish brownish stuff we call rust. This process continues until all the iron is eaten up. |
How could you prevent something from rusting?
| You can protect metal from rust by, covering with paint, coating oil or even plastic, this helps prevent rust from metal, but if the metal were in water for example the harbor bridge which is located in New Zealand is made out of steel and is in salt water, The first half of steel is not in water. Therefore it gets coated with paint at least three times. But the bottom of the harbor bridge which is the other half of the steel has to get coated more than three times because of how it is easier and faster for the rust to process. |
Write 3 sentences explaining something new you’ve learned from this reading.
| I’ve learnt that the harbor bridge needs to be coated more than three times, and the rest of the steel which is at the bottom, needs to be coated more than three times. I also learnt that when metal or steel is exposed to air or water it slowly starts to react in a way that then turns into something called Iron Oxide, this then reacts with water becoming hydrated Iron Oxide. Which is what we call rust. Another thing I learnt was that steel rusts faster and slower in different environments, and that some steel could possibly take years to rust and others in a matter of days. |
Write down any new words you found in Fast Rust or the article about rust. Make sure you learn what the word means and write down a definition you understand for each new word.
| Word | Definition |
| Corrosion | A breaking down of materials due to a chemical action like rusting. |
| Alloy | Something that makes the metal stronger and more unbreakable to corrosion. |
| Exposed | When something is being seen by something/someone else. |
| Decays | When something is dying slowly. |
| Texture | When something is slightly detailed and has a type of touch to it. |
| Protection | Something that has a shield that can protect itself. |
| Unreactive | Something that is not responsive. |
| Coating | Something that has a layer of paint or something. |
| Chemicals | Something that can react to each other in a way or can have no response. |
| Stainless steel | A steel that has no stain or mess on it |
