Intro Text Introducing and experimenting with pressure in gases

What is a gas? Have you heard about the atmosphere and the oxygen we breathe? What is inside an inflated balloon and an empty bottle? Did you know that air pushes against you all the time although you do not feel it?

Although we cannot see them, gases are everywhere and we can perceive their existence via their properties.

Get the required materials, prepare your working space and follow us in a quest to discover the properties of gases by experimenting with atmospheric and gas pressure!

You will need:

  • 10 Balloons
  • A sachet of citric acid
  • Βaking soda
  • A pack of paper napkins
  • A short glass
  • A deep plastic or glass bowl in which the short glass can be fully immersed.
  • A tall glass
  • A square piece of cardboard (10 cm x 10 cm)
  • Thin thread
  • A straw
  • Scotch tape
  • A 1.5-liter plastic bottle
  • A push pin
  • A CD (Compact Disk)
  • An all-purpose adhesive
  • A push pull sport bottle cap

Reservation is required at 210 9469620, 210 9469683, 210 9469662 or 210 9469663, Monday to Friday, 9:30 - 16:30, as well as completing the application form/formal declaration and sending it to

After confirming the reservation, you will receive an email with the link and the relevant instructions for direct connection to the workshop. The workshops are conducted through the Microsoft Teams online platform.

The program is free of charge.

Adult supervision is required.