35 thoughts on “TASK 21

  1. Manuel Almeida.

    The reactants are oxygen, metal and water. The reaction is called oxydation and produces rust.

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  2. To produce rust you need: oxygen, water and metal
    this chemical reaction is called: oxidation

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  3. The reactants of this chemical reaction are metal, oxygen and water, this chemicar reaction is called oxidation.

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  4. A.C. 6ºB

    To produce rust in a metal, we need add oxygen and water. This chemical reaction is called oxidation.

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  5. The reactants that produce rust in a metal are water and oxygen and this produce a reaction called oxidation.

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  6. The reactants that cause the rust are iron, water and oxygen.The chemical reaction is called oxidation that is produced when adding oxygen to a substance.

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  7. To pruduce rust, lawyer on top of the metal, you will need water, metal and oxygen.This reaction is call oxidation.

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  8. to produce rust , you must have wáter oxygen and metal .
    The chemical reaction is called oxidation

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  9. Diego Trigo DT 6B
    The chemical reaction is called oxidation. The reacts that produces rust,are metal, oxygen and water.

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  10. JDH-6ºA: Oxigen and water are the reactans on a chemichal reaction in metal that produces rust. This chemical reaction, which is called oxidation, is also affected by salt: the salt accelerates the procces of oxidation, but, it neither cause it, nor sustitute any reactans of oxidation. If you want to prove it you can do a experiment and compare a metal which is very close to the sea (because of the salt) to one which is in Madrid for example (it has to be far from the sea) You will observe that the one which is near the sea oxidates first. That may be a problem for cities near the sea, but we have found a way to protect the metal from the air (which carries oxigen salt and water): surrounding the metal we put another material that protects the metal so it isn’t as easly oxidated. We call this solution ‘reduction’.

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  11. HR 6ºA
    For produce rust the reactants are metal, water and oxigygen. And the chemical reaction is called oxidation

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  12. To produce rust, laweyer in the top of metal you need thise examples: oxygen, metal and water. And thise chemical reaction is called oxidation.

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  13. Rust is produced with: Metal, Water and oxygen, this reactants form a reaction that is called oxidation.

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  14. Alvaro Correa

    The chemical reaction that produces rust is called oxidation. It needs three reactants to happen: metal, water and oxigen, but there is another reactant that speeds the oxidation: salt.

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  15. To produce rust, the reacts that you need are metal, water and oxygen.
    This chemical reaction is callled oxidation.

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  16. Alicia Alonso Pérez 6ºA

    In oxidation, when you combine metal, with water and oxygen, rust is produced.

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  17. The reactants in a metal that produce rust are: Water, Oxygen and Metal.
    This chemical reaction is called oxidation.

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  18. MSM 6ºA
    The reactants in oxidation which produces rust are metal, water and oxygen. The chemical reaction is called oxidation.
    Since I have not ride the bike in a long time, some pieces are rusting.

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  19. NSD 6ºB To produce rust, lawyer in the top of metal, you need water, oxygen and metal. This is a chemical reaction called oxidation.

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