Reaction of Carbon Dioxide with Magnesium

Material Cylinder, glass plate, crucible tongs magnesium ribbon, carbon dioxide gas, sand. 

Procedure Place a 1-cm layer of sand in the cylinder as a protector for the bottom of the cylinder. Fill the cylinder with carbon dioxide by replacing the air and cover it with a glass plate. Hold a 10-cm piece of magnesium ribbon using crucible tongs, carefully light it and place it deep within the cylinder, taking care not to touch the cylinder. 

Observation The flame does not extinguish but continues burning with a crackling noise. On the inside of the cylinder, one can see black dots. When retrieving with one s finger, it is obvious it is soot that can color white paper black carbon. 

---