Corrosion I
Aim: To investigate the factors that cause rusting in iron.
Equipment:
- Test tubes
- Test tube rack
- A bung
- four iron nails
- Boiled water
- Tap water
- Salty water
- Cooking oil
- Calcium Chloride
Method:
- Label four test tubes A - D and place them in a test tube rack.
- Test tube contents:
- A = Iron nail.
- B = Iron nail and tap water.
- C = Iron nail and salty water
- D = Iron nail, boiled water and oil.
3. Leave the test tubes undisturbed for at least three days.
Hypothesis: Test tubes A to D can be expected to rust more and have the most visual changes, rather than test tubes E to H.
Observations: Complete the table.
Corrosion II
Aim: To investigate a number of techniques that may prevent rusting.
Equipment:
- Four test tubes
- Test tube rack
- A bung
- Four iron nails
- Tap water
- Vaseline gel
- Nail polish or paint
- Zinc pellets or magnesium ribbon
Method:
- Label four test tubes A - D and place in a test tube rack.
- Fill all test tubes with equal volumes of water - enough to cover the nails.
- Test tube contents:
- A = Iron nail, calcium chloride and a bung.
- B = Iron nail covered in Vaseline and water.
- C = Iron nail painted with nail polish or paint.
- D = Iron nail with a small piece of magnesium ribbon wrapped around it, or with zinc pellets added to the test tube.
4. Leave the test tubes undisturbed for at least three days.
Observations:
No comments:
Post a Comment
Comments
Please structure your comments as follows:
Positive - Something done well
Thoughtful - A sentence to let us know you actually read/watched or listened to what they had to say
Helpful - Give some ideas for next time or Ask a question you want to know more about