Question

What is sublimation
Explain with help of an activity & diagram

Answer 1

The process by which the solid state of a product is directly converted into gas is called sublimation. example: camphor,dry ice,water etc..,

Activity:

China dish, Bunsen burner, camphor

Procedure :

crush the camphor into the China dish and heat it over the flame with the help of Bunsen burner. Heat for a few minutes the solid camphor turn into liquid state. Again heat it for a few minutes the liquid state of camphor will evaporate and turn into gas

Hence, the sublimation process is proved by this experiment

Answer 2

Answer:

The process of change of gaseous state to solid without going through liquid state. This process is known as sublimation.

Activity:

1. Take some ammonium chloride,crush it and put it in a china dish.

2. Put an inverted funnel over the dish.

3. Put cotton plug or ball on the steam of funnel.

4. Now, heat slowly and observe.

Explanation:

Observation :

We can observe that the change of state directly from solid to gas without changing into liquid state.

Diagram shown in the picture