Introducing and experimenting with pressure in gases

What is a gas? What is the difference between solids, liquids and gases? We can easily see liquids and solids around us, but most gases aren’t visible. Although we can’t see the air around us, it is made of atoms that constantly move around freely in space. How can we tell?

What is pressure? What is the difference between pressure and force? Do gases exert pressure? Is the air above us pushing down on us? If yes, why don’t we feel it? What happens when a gas is heated or cooled? What happens when a gas gets compressed?

Although we cannot see them, gases are everywhere, and we can perceive their existence via their properties. The study of gases has played an important role in the evolution of modern science and technology.

Experimenting with simple household materials students will discover the properties of gases, will produce gases and experiment with atmospheric and gas pressure.

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:

  • Two 0.5 lt soda bottles
  • One 0.5 lt bottle of water
  • A sachet of citric acid
  • A sachet of baking soda
  • A small spoon
  • 10 balloons
  • A pack of paper napkins
  • A short glass
  • Two deep plastic or glass bowls in which the short glass can be fully immersed
  • A tall glass
  • A square piece of cardboard (10 cm x 10 cm)
  • A 1.5 lt soda bottle
  • A water kettle
  • A funnel
  • A tealight candle
  • A lighter
  • A shallow dish
  • Food color
  • One 100ml medical plastic feeding food irrigation syringe
  • Ice cubes
  • Ice cold water
  • Boiled water
  • A kitchen glove

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.