Question

Perform an activity to understand the characteristics of gases.

Answer 1

Step-1:

Gases :

Gases have neither a fixed shape nor a fixed volume. Hence, they do not have fixed boundaries.

Examples of Gases:

Air, oxygen, carbon dioxide, steam

Step-2:

Activity to understand the characteristics of gases:

Procedure:

1. Take three 100 mL syringes.
2. Close their nozzles with rubber corks, as shown in the figure below. \
3. Remove the pistons from all the syringes.
4. Leaving one syringe untouched, fill water in the second and pieces of chalk in the third.
5. Insert the pistons back into the syringes.
6. You may apply some vaseline to the pistons before inserting them into the syringes for their smooth movement.
7. Now, try to compress the content by pushing the piston in each syringe.
8. Note down your observations.

Step-3:

Experimental setup to study the characteristics of gases:

Step-4:

Observation:

The pistons of the syringes (containing chalk pieces and water) require a large amount of force, while the piston of the third syringe which contains air is comparatively easier to push.

Step-5:

Conclusion:

Thus, we can conclude that a solid and a liquid do not get compressed by applying pressure, But gas can be compressed easily by applying pressure.