Question

When we burn a cleaned piece of magnesium ribbon in air , we observe
a. A white dazzling light while burning

b. A green residue left after burning

c. A black residue left after burning

d. A yellow residue left after burning ​ please help

Answer 1

Answer:

a. A white dazzling light while burning

Explanation:

Magnesium ribbon burns with dazzling light and white substance is formed which is magnesium oxide.

This happens due to following chemical reaction: 2Mg(s) + O2 (g) ====> 2MgO (s)

Results: Burning of magnesium in presence of oxygen to form magnesium oxide is a combination reaction.