Question

While burning a magnesium ribbon in air, list two safety measures which should be followed. Also state two observations of this activity.

Hint:

Magnesium burns with a bright white flame, and proper safety measures should be followed to avoid exposure to harmful fumes.

Answer 1

Safety Measures: Always use a pair of tongs to hold the magnesium ribbon to prevent direct contact with hands. Burn magnesium in a fume hood or open space to avoid inhaling any fumes. 
Observations: Magnesium burns with a bright white flame and produces a white ash of magnesium oxide. The magnesium ribbon turns into a white powder (magnesium oxide) after combustion.