Question

AIM :
To study the nature of metallic oxides.

MATERIALS REQUIRED:
Magnesium ribbon, candle, match box, watch glass and red and blue litmus paper.

PROCEDURE :
(i)Take a magnesium ribbon and burn it in a candle flame.

(ii)Magnesium ribbon burns with dazzling white flame.

(iii)Collect the white ash and dissolve it in a little water.

(iv)Test the solution with red litmus paper.

OBSERVATION :
Action on red litmus-
Action on blue litmus-
Inference-

RESULT :​

Answer 1

Answer:

Explanation: Get a small piece of a thin strip or ribbon of magnesium. Clean its tip with sandpaper. Bring the tip near a candle flame. It burns with a brilliant white light. When it is completely burnt it leaves behind a powdery ash.The change in the strip of magnesium can be represented in the following equation:

Magnesium (Mg) + Oxygen (O2) ⇒ Magnesium oxide (MgO)

On dissolving the ash in water it forms a new substance:

Magnesium oxide ( MgO)+Water (H2O) ⇒ Magnesium Hydroxide {Mg(OH)2}

Magnesium hydroxide is a base so it will change red litmus to blue

Hope you understand my answer