With the help of an activity show that Oxygen and nitrogen
present in the air.
Answers
Answer:
Explanation:
Solution:
Experiment - to show oxygen and nitrogen component in air using a bell jar.
Apparatus - a trough, a bell jar, a cork, a crucible and a piece of white phosphorus.
Procedure - A trough is filled with and a bell jar is labelled into 5 equal parts.
A crucible which has white phosphorus is placed on a cork is floating in the water.
The level of water inside the jar and outside the jar are adjusted to one level
The phosphorus is ignited by means of an ignited wire.
Observation - The phosphorus burns in air with oxygen and forms dense white fumes of phosphorus pentoxide.
The level of water inside the bell jar rises by 1/5th.
Conclusion - Oxygen is the active component in air which burns phosphorus and nitrogen is the inactive component of air which is not used in burning.
Answer:
Procedure:
✨Take a candle, a glass tumbler and a pan which is filled with some water. ✨Keep the candle upright in the pan and light the candle. ✨Now cover the candle with the glass tumbler. ✨It is observed that the candle extinguishes after some time