What are ideal gases?

An ideal gas is like a group of tiny bouncy balls that never get tired and always follow the same simple rules.

Imagine you have a big balloon full of little bouncy balls, these are like the particles in a gas. If you shake the balloon, they zoom around inside, bumping into each other and the sides of the balloon. Now, if these bouncy balls never get tired, don’t stick together, and always move straight until they hit something, that’s an ideal gas!

In real life, sometimes the little balls (gas particles) do slow down a bit or even stick together, like when you play with sticky gum balls. But in our perfect world of ideal gases, the bouncy balls never stop moving and never change their size.

If you warm up your balloon, the bouncy balls inside get more energetic and move faster, making the balloon bigger. If you cool it down, they slow down and the balloon gets smaller, just like how a real balloon behaves when you blow it up or let the air out!