Aim: To show that by applying pressure particles of matter can be brought close together.

Materials required:

* Two identical balloons

* A hand pump

* A ruler

* A marking pen

Procedure:

1. Inflate one of the balloons to a small size, just enough so that it is round.

2. Use the marking pen to draw a line around the widest part of the balloon.

3. Measure the distance between the two lines with the ruler.

4. Record this measurement in a table.

5. Repeat steps 2-4 for the second balloon.

6. Now, connect the hand pump to the first balloon and inflate it until it is much larger than the second balloon.

7. Measure the distance between the two lines on the first balloon again.

8. Record this measurement in the table.

9. Repeat steps 7-8 for the second balloon.

Observations:

As you can see from the table, the distance between the two lines on each balloon increased when the balloon was inflated. This is because the air molecules inside the balloon were forced closer together when the pressure was increased.

Conclusion:

This experiment shows that by applying pressure particles of matter can be brought close together.