Science

Corrosion 1 experiment 

Aim: To investigate the factors that cause rusting in an iron nail.

Equipment: Four test tubes, test tube rack, a bung, four iron nails, boiled water, tap water, salty water, cooking oil, calcium chloride.

A = Iron nail and tap water
B = Iron nail and salty water
C = Iron nail, boiled water, oil
D = Iron nail and calcium. Sealed with a bung

Observations: 
A - Had Rust
B- Had a lot of rust
C- No rust
D - No rust

Corrosion 2 experiment 

Aim: To investigate a number of techniques that might prevent rusting.

Equipment: Four test tube, test tube rack, a bung, four iron nails, tap water, Vaseline gel, nail polish, zinc pellets or magnesium ribbon.

A = Iron nail
B = Iron nail covered in Vaseline.
C = Iron nail painted with nail polish.
D = Iron nail with a small piece of magnesium ribbon wrapped around it

Observations: 
A = Had rust
B = No rust
C = No rust 
D = No rust. Zinc/Mg Corroding