Class 10th - Science
All Activities + Questions
, Burning of a magnesium ribbon in air and collection of magnesium
oxide in a watch-glass
Activity
AASAN BHASHA MEI Samajhte hai:
● Take about 2 cm long
magnesium ribbon .
1.1 ● Clean it with sandpaper.
● Hold the magnesium ribbon
with a pair of tongs , and start
heating its other end.
● The Magnesium Ribbon starts
burning.
● BUT IT'S NOT BURNING ALONE.
● It starts burning with a dazzling
white flame.
● And now to collect the
Magnesium Oxide Powder hold
it over a Watch Glass
,Activity
1.1
, Activity
1.1
Q. Why Magnesium ribbon is cleaned before burning in the air?
Ans. The magnesium ribbon which we use usually has a coating of
‘magnesium oxide’ on its surface which is formed by the slow action of
oxygen of air on it. So, before burning in air, the magnesium ribbon is
cleaned by rubbing with a sand paper. This is done to remove the protective
layer of magnesium oxide from the surface of magnesium ribbon so that it
may readily combine with the oxygen of air (on heating).
All Activities + Questions
, Burning of a magnesium ribbon in air and collection of magnesium
oxide in a watch-glass
Activity
AASAN BHASHA MEI Samajhte hai:
● Take about 2 cm long
magnesium ribbon .
1.1 ● Clean it with sandpaper.
● Hold the magnesium ribbon
with a pair of tongs , and start
heating its other end.
● The Magnesium Ribbon starts
burning.
● BUT IT'S NOT BURNING ALONE.
● It starts burning with a dazzling
white flame.
● And now to collect the
Magnesium Oxide Powder hold
it over a Watch Glass
,Activity
1.1
, Activity
1.1
Q. Why Magnesium ribbon is cleaned before burning in the air?
Ans. The magnesium ribbon which we use usually has a coating of
‘magnesium oxide’ on its surface which is formed by the slow action of
oxygen of air on it. So, before burning in air, the magnesium ribbon is
cleaned by rubbing with a sand paper. This is done to remove the protective
layer of magnesium oxide from the surface of magnesium ribbon so that it
may readily combine with the oxygen of air (on heating).
