Preview - Introduction To Netlogo: Rusting & Rates Of Reaction

Exploration 3

Now that you can see that a single molecule of oxygen is made of three oxygen atoms and two iron atoms, repeat exploration 2 to check and see if only a single molecule of rust is created when a reaction occurs between the reactants.

  1. Set the IRON-BLOCK-GEOMETRY to 9x9 Middle Box

  2. Press the SETUP button

  3. Press the GO/STOP

  4. Adjust the slow motion slider to study this prediction.

Let the model run until most of the edges are covered in rust. 

 

In reality, iron or steel only rusts on the surface. Over time, however the rust sometimes flakes off the surface, exposing more iron or steel underneath to the air.

 

Questions

Please answer the questions below.

Study the iron block with the rust on it in the model. Would this entire object weight more, less, or the same as the block of iron atoms that you started with in the model? Explain why.

Why do you think rust is only occurring on the edges of the iron block?

Notes

These notes will appear on every page in this lesson so feel free to put anything here you'd like to keep track of.