Forces and motion - Final challenge

 

CORROSION - Science

AIM: To investigate the factors that causes rusting on the nail.
TEST TUBE CONTEXT:
-A = Nail + tap water
-B =Nail + Salt water
-C = Nail + Boiled water + Oil
-D = Nail + Calcium chloride + sealed

Present 
A - Water, air, oxygen
B - Salt, Water, AIr
C - Water, no oxygen
D - Oxygen, no water
Observations
A - Rust
B- Alot of rust
C- No rust
D - No rust


CORROSION II
AIM: To investigate techniques to prevent rust
TEST TUBE CONTEXT:
-A = Nail
-B =Nail in Vaseline
-C = Nail coated with nail polish
-D = Nail wraped with magnesium ribbon

Observations
A- Rusting
B- No rust
C- No rust
D- No rust - Mg corroding

MEDICAL SCIENCE