Question

1. Magnesium ribbon is rubbed before burning because it has a coating of
2. What is the colour of magnesium ribbon?

Answer 1

Answer:

1) basic magnesium oxide

2) silvery white

if they are incorrect sorry for that....

Answer 2

Answer:

1 - basic magnesium oxide

Explanation: Magnesium is a highly reactive metal. When exposed to air it forms a layer of magnesium oxide on its surface, which prevents further reaction of magnesium with oxygen. Magnesium ribbon is rubbed before burning because it has a coating of basic magnesium oxide.

2 - Colour of magnesium metal is silvery white. Hold the magnesium ribbon with the help of a pair of tongs, light the magnesium and collect the ash of burnt ribbon in a china dish. It burns brilliantly and a white ash is left behind. Magnesium burns in air to form Magnesium oxide (MgO).

Explanation: