So:
1. Distilled water and salt to be sprayed on nails (replicating humidity or the frequent spraying experienced near coastal areas) to promote corrosion.
2. Nails will predominantly be composed of iron (Fe) among other trace metals. Note: Investigation will focus on the rusting of iron, and will not take into factor other materials used to compose the iron-alloy.
3. Initial predictions: Saline solution is expected to make the nails rust a lot more than distilled water. Intervention of electrolysis will slightly prevent corrosion.
4. Concepts:
Concept for nails without electrolysis.
*It was established that the terms for the 'blocks of wood' be referred to as 'Groups'. Groups without corrosion prevention measures marked 'distilled water' and 'saline solution' will be named C and D respectively
Equipment and Procedure:
Initial requirements:
- 10 iron nails - approx 0.5cm wide, 6cm long
- Scales
- Distilled water + saline solution
- Block of wood
Hammer - Bottle spray
- 500mL container
1. Set up scaling apparatus.
2. Gather nails.
3. Nails are to be hammered into blocks of wood, 10 nails evenly spaced in each wood.
4. Use 500mL beaker of distilled water and salt solution (they are separate)
5. Fill bottle spray.
6. Spray nails.
7. Remove nails and measure corrosion formation (if any).
2. Gather nails.
3. Nails are to be hammered into blocks of wood, 10 nails evenly spaced in each wood.
4. Use 500mL beaker of distilled water and salt solution (they are separate)
5. Fill bottle spray.
6. Spray nails.
7. Remove nails and measure corrosion formation (if any).
Concept of Groups with electrolysis, or corrosion prevention measures.
Highlighted* Any breaks in the conductive wire (circuit) will cause the light to go off - a good indicator of whether electrolysis is taking place.
Equipment and procedure:
- 10 nails
- Scales
- Distilled water/saline solution
- Block of wood
- Hammer
- Bottle spray
- Low voltage power supply
Conductive wire (must be aluminium) - Light bulb
- Alligator clips
1. Set up scaling apparatus.
2. Gather nails.
3. Nails are to be hammered into blocks of wood, 10 nails evenly spaced in each wood.
4. Take conductive wire, strip sides approximately 1-2cm inwards from the end so wiring is exposed. Attach wire to nails in a top-to-top bottom-to-bottom fashion, leaving the middle two nails.
5. Attach low voltage power supply to power outlet, use alligator clips to connect light bulb to power supply.
6. Attach the two to centre two nails to complete circuit.
7. Prepare spray bottle (distilled and salt).
8. Turn power off, spray nails. Ensure all surface area of nails have been covered, record weight of bottle (with lid off) after procedure.
9. Turn power on, refer to light bulb to ensure circuit is running.
10. Remove nails and measure corrosion formation (if any).
2. Gather nails.
3. Nails are to be hammered into blocks of wood, 10 nails evenly spaced in each wood.
4. Take conductive wire, strip sides approximately 1-2cm inwards from the end so wiring is exposed. Attach wire to nails in a top-to-top bottom-to-bottom fashion, leaving the middle two nails.
5. Attach low voltage power supply to power outlet, use alligator clips to connect light bulb to power supply.
6. Attach the two to centre two nails to complete circuit.
7. Prepare spray bottle (distilled and salt).
8. Turn power off, spray nails. Ensure all surface area of nails have been covered, record weight of bottle (with lid off) after procedure.
9. Turn power on, refer to light bulb to ensure circuit is running.
10. Remove nails and measure corrosion formation (if any).
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