To determine what conditions cause (or accelerate) rusting.
What is rusting of iron?
Rust is the chemical combination of iron with oxygen. It's an example of a very common and very important type of chemical change: OXIDATION, the combining of a material with oxygen.
How can iron rusting be prevented?
Three methods may be used to prevent the rusting of iron: (1) alloying the iron so that it will be chemically resistant to corrosion; (2) coating it with a material that will react with the corroding substances more readily than the iron does and thus, while being consumed, protect the iron; and (3) covering it with an impermeable surface coating so that air and water cannot reach it.
Predict which environments will cause rust and which will not.
* X5 Test tubes with stoppers
* Boiled water
* Distilled water
* Sodium Carbonate
* Anhydrous Chloride
* Test tube rack
Test tube 1: Place nails in moist air acting as the control
Test tube 2: Place nails submerged in distilled water that has been boiled to remove the oxygen. After boiling for 3 minutes put a layer of Vaseline on the surface whilst the water is still hot. This should stop any oxygen form re-entering the water
Test tube 3: place nails in distilled water
Test tube 4: Place nails in test tube with sodium carbonate which removes moisture from the air.
Test tube 5: Place nails in salt water. Add sodium chloride to the water to make a salt solution. Submerge the nails in the solution.
Allow the nails to sit for 24 hours and record your observations
Test tube number
Did it Rust
1. Write down the following Variables in the experiment
Independent: The conditions in which the nails were placed.
Dependent: The Nails were the same...
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